April 24 Update Patch Notes

The 2.5th anniversary event is finally here, with a massive list of updates! We’re finally getting Siren (Little Mermaid) and a certain member’s prayers have been heard to bring us Over-Spec Mihara! Additionally, 6 long awaited Costumes are getting a rerun including Alice. Some more goodies, next Champions Arena and very nice quality of life: Improved rewards from daily missions!

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Bulletpoints

Bulletpoints because even for a TLDR this list is too long.

• New SSR Little Mermaid
  • Pilgrim, Supporter, Submachine Gun, Wind Code
  • enhances attack power of self and allies; continuously attacks with bubbles to weaken enemies
• New SSR Mihara: Bonding Chain
  • Missilis, Attacker, Machine Gun, Fire Code
  • uses chains to nonstop attack enemies; burst enhances accumulated chains for greater sustained damage
• New SSR Mori
  • Missilis, Defender, Assault Rifle, Wind Code
  • protects allies with shield and taunt; broken shield enhances survivability and creates bigger shield
• New Costumes
  • Little Mermaid – Abyss Flower (costume gacha)
  • Grave – Beautiful You (2.5 anniversary pass)
  • Cinderella – Beautiful Me (May mission pass)
  • Mihara: Bonding Chain – Pain Eater (costume gacha)
• Costumes Rerun
  • from Maintenance End to May 15th
  • Alice – Sweet Home
  • Liter – Cute Sunflower
  • Diesel – Black Sunday
  • Sugar – Hard-Boiled
  • Dolla – Dark Rose
  • Noise – Cherry Blossom Stage
• New Events
  • New Story Event: UNBREAKABLE SPHERE
  • Mini Game: Bubble March
  • Archives
    • KILL THE LORD
  • 2.5TH ANNIVERSARY
  • 14 Days Login Event – WITH BUBBLE
  • New Pass Event – ROAD TO VILLAIN
  • Weekend Event – FULL BURST DAY
  • Daily Bonus Reward
  • Skill Level Reset
  • 5×5 Supplies Event
  • Recruitment Rewards Event
• Solo Raid – May 8 to May 15
• Union Raid – April 25 to May 1
• Coordinated Operation – May 2 to May 4
• Reshuffling of Arena Groups
  • Rookie: May 14 to May 15
  • SP: May 21 to May 22
• Simulation Room – Overclock Mode (Season 4) – May 6 to July 29
• Outpost Themed Event
• Champion Arena (Beta Season 2) – Starts after maintenance
• Gameplay Updates
  • New Campaign Chapters: 37 and 38
  • New Lost Sectors: 26 and EX-10
  • New Harmony Cube
  • New floors in the Tribe Tower
    • Tribe Tower: from 950 to 1050
    • Manufacturer Tower: from 850 to 950
  • Added IN THE MIRROR to the Arcade
  • Improved rewards
    • daily and weekly missions
    • Simulation Room and Overclock mode
    • repeated clearing of Solo Raids

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Bready and Crust will be available in Ordinary Recruit, Social Point Recruit, and from Mold items (Unavailable in New Commander Special Recruit, Ordinary Recruit (Tutorial), and Mileage Shop).

1. New Nikkes

1.1 SSR Little Mermaid

As one of the second-generation Grimms models who are rewriting their story, SSR Nikke Little Mermaid from the Old Tales Squad joins Special Recruitment.

Little Mermaid is a Supporter Nikke who enhances the attack power of herself and her allies.

She attacks the enemy with bubbles continuously, weakening their powers.

– Class: Supporter

– Weapon: Spindrift (SMG)

– Code: Wind

– Manufacturer: Pilgrim

* Special Recruit duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

* How to obtain: Lobby → Recruit → Special Recruit

* Recruit Rules:

① You can use Gems (Free/Paid) or Advanced Recruit Vouchers to recruit in Special Recruit (Ordinary Recruit Vouchers cannot be used).

② There is a 4% chance of acquiring SSR Nikkes in Special Recruit and a 1% chance of acquiring SSR Little Mermaid.

③ You can get Gold Mileage Tickets when recruiting in Special Recruit.

④ You can exchange 200 Gold Mileage Tickets for Little Mermaid in the Mileage Shop.

⑤ When Special Recruit ends, unused Gold Mileage Tickets will not disappear.

⑥ In the version update after Special Recruit ends, Little Mermaid will be available in Ordinary Recruit and from Mold items. (Unavailable in New Commander Special Recruit, Social Point Recruit, Ordinary Recruit (Tutorial), and Mileage Shop)

* 2.5th Anniversary Special! Get one free Special Recruit attempt for SSR Nikke Little Mermaid daily.

* Gold Mileage Tickets are not earned from free recruit attempts.

1.2 SSR Mihara: Bonding Chain

SSR Nikke Mihara: Bonding Chain, who has maintained a relationship with Yuni and received a brand-new body, joins Special Recruitment.

Mihara: Bonding Chain is an Attacker Nikke who uses a restraint chain to attack the enemy nonstop.

Her Burst Skill enhances the accumulated restraint chain to deal greater sustained damage.

– Class: Attacker

– Weapon: Bonding Heart (MG)

– Code: Fire

– Manufacturer: Missilis (Over-Spec)

* Special Recruit duration: From 5:00:00, May 1, 2025 to 4:59:59, May 22, 2025 (UTC+9)

* How to obtain: Lobby → Recruit → Special Recruit

* Recruit Rules:

① You can use Gems (Free/Paid) or Advanced Recruit Vouchers to recruit in Special Recruit (Ordinary Recruit Vouchers cannot be used).

② There is a 4% chance of acquiring SSR Nikkes in Special Recruit and a 1% chance of acquiring SSR Mihara: Bonding Chain.

③ Gold Mileage Tickets not used during Special Recruit will not expire.

④ You can exchange 200 Gold Mileage Tickets for Mihara: Bonding Chain in the Mileage Shop.

⑤ When Special Recruit ends, unused Gold Mileage Tickets will not disappear.

⑥ In the version update after Special Recruit ends, Mihara: Bonding Chain will be available in Ordinary Recruit and from Mold items. (Unavailable in New Commander Special Recruit, Social Point Recruit, Ordinary Recruit (Tutorial), and Mileage Shop)

* 2.5th Anniversary Special! Get one free Special Recruit attempt for SSR Nikke Mihara: Bonding Chain daily.

* Gold Mileage Tickets are not earned from free recruit attempts.

1.3 SSR Mori

SSR Nikke Mori from the Incubator Squad, who fights alone for survival, now joins the battlefield.

Mori is a Defender Nikke who protects the allies by generating a shield and taunting the enemy.

Whenever her shield is broken, her survivability is enhanced, allowing her to create an even stronger shield.

– Class: Defender

– Weapon: Mole’s Forest (AR)

– Code: Wind

– Manufacturer: Missilis

Mori can be obtained in story event UNBREAKABLE SPHERE, 14 Days Login, and 2.5TH ANNIVERSARY event. Check out the New Events information below to find out how.

When to obtain: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

⑥ When the 2.5TH ANNIVERSARY event ends, Mori will not be available in Ordinary Recruit, New Commander Special Recruit, Ordinary Recruit (Tutorial), Social Point Recruit, Mold items, and Mileage Shop.

* Mori’s Spare Body will be available in the Mileage Shop.

1.4 Temporarily Participating Nikkes

During the Special Recruit period, you can temporarily add recruitable Nikkes to your squad to test them out in the Union Shooting Range.

* Temporary Participation duration:

① Little Mermaid: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

② Mihara: Bonding Chain: From 5:00:00, May 1, 2025 to 4:59:59, May 22, 2025 (UTC+9)

2. New Costumes

2.1 Special Costume: Little Mermaid – Abyss Flower

A flower of joy blooms in the depths of the sea.

Little Mermaid – Abyss Flower can now be obtained from the Costume Gacha with full VO, Burst Skill cutscene, standing pose, and SD special motion.

2.2 Special Costume: Grave – Beautiful You

You truly are beautiful.

Grave – Beautiful You can be obtained from the 2.5TH ANNIVERSARY PASS. Check out details about the 2.5TH ANNIVERSARY PASS in the New Commodities section below.

2.3 Special Costume: Cinderella – Beautiful Me

I truly am beautiful.

Cinderella – Beautiful Me can be obtained from the May Mission Pass. Check out the details on the May Mission Pass in the New Commodities section below.

2.4 Special Costume: Mihara: Bonding Chain – Pain Eater

She finds joy in both pain and pleasure.

Mihara: Bonding Chain – Pain Eater can now be obtained from the Costume Gacha with full VO, Burst Skill cutscene, standing pose, and SD special motion.

* Note: You cannot use this costume on Mihara.

3. Special Costumes Rerun

3.1 Special Costume: Alice – Sweet Home

The daywear that Alice excitedly put on for her trip to the Ark.

A costume that balances mobility and cuteness, further highlighting Alice’s charm.

Alice – Sweet Home will be available in the Cash Shop again for a limited time.

* Sale duration: After the maintenance on April 24, 2025 to 4:59:59 May 15, 2025 (UTC+9)

3.2 Special Costume: Liter – Cute Sunflower

The sunflower that blooms in the new year.

Liter – Cute Sunflower will be available in the Cash Shop again for a limited time.

* Sale duration: After the maintenance on April 24, 2025 to 4:59:59 May 15, 2025 (UTC+9)

3.3 Special Costume: Diesel – Black Sunday

A rare day off, just for her.

Diesel – Black Sunday will be available in the Cash Shop again for a limited time.

* Sale duration: After the maintenance on April 24, 2025 to 4:59:59 May 15, 2025 (UTC+9)

3.4 Special Costume: Sugar – Hard-Boiled

Call me Hard-boiled.

Sugar – Hard-Boiled will be available in the Cash Shop again for a limited time.

* Sale duration: After the maintenance on April 24, 2025 to 4:59:59 May 15, 2025 (UTC+9)

3.5 Special Costume: Dolla – Dark Rose

A thorned flower blooms in a world of darkness.

Dolla – Dark Rose will be available in the Cash Shop again for a limited time.

* Sale duration: After the maintenance on April 24, 2025 to 4:59:59 May 15, 2025 (UTC+9)

3.6 Special Costume: Noise – Cherry Blossom Stage

Her stage blossoms, just like spring.

Noise – Cherry Blossom Stage will be available in the Cash Shop again for a limited time.

* Sale duration: After the maintenance on April 24, 2025 to 4:59:59 May 15, 2025 (UTC+9)

4. New Events

4.1 New Story Event: UNBREAKABLE SPHERE

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

Little Mermaid lives in a lonely yet serene bubble garden. One day, her peace is shattered when three Nikkes crash into her garden…

Explore the UNBREAKABLE SPHERE map and participate in various activities. By searching the map, players can acquire Gems, development materials, and unexpected Lost Relics.

* Item exchange in the Event Shop will end at 4:59:59, May 15, 2025 (UTC+9).

① Story Event Part 1: STORY I

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

Clear the stages in UNBREAKABLE SPHERE STORY I to obtain a variety of rewards, including Advanced Recruit Vouchers and various development materials.

② Story Event Part 2: STORY II

* Event duration: From 5:00:00 May 1, 2025 to 4:59:59, May 15, 2025 (UTC+9)

Clear the stages in UNBREAKABLE SPHERE STORY II to obtain a variety of rewards, including Advanced Recruit Vouchers and various development materials.

③ Challenge Stage

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

Challenge Stage is available in UNBREAKABLE SPHERE. Challenge the difficult boss stages to obtain various development materials!

Clear all stages and complete the challenge missions to receive the 2.5th Anniversary Nikke Selection Box (choose between Kilo, Rei, and Mori).

4.2 Mini Game: Bubble March

A board game created by Little Mermaid using bubbles.

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

4.3 Archives – KILL THE LORD

Story Event KILL THE LORD is now available in Archives.

Participate in UNBREAKABLE SPHERE to obtain Memory Films used for unlocking story events in Archives.

* Available from: After the maintenance on April 24, 2025

* How to enter: Lobby → Outpost → Command Center → Recollection → Archives

4.4 2.5TH ANNIVERSARY

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

Log in during the 2.5TH ANNIVERSARY event to obtain rewards including SSR Mori, Advanced Recruit Voucher ×10.

4.5 14 Days Login Event – WITH BUBBLE

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

Log in daily for up to 14 days during the event and get rewards.

Get all available rewards, including 2.5th Anniversary Nikke Selection Box (choose between Kilo, Rei, and Mori), Recruit Vouchers, and various development materials when you log in for 14 days straight.

4.6 New Pass Event – ROAD TO VILLAIN

* Event duration: After the maintenance on April 24, 2025, until further notice (UTC+9)

During the event period, earn development materials and up to 3 Drakes as event rewards. Complete the daily, weekly, and challenge missions to earn points and increase your Pass Rank for more rewards.

4.7 Weekend Event – FULL BURST DAY

* Event duration: From 5:00:00, April 26, 2025 to 4:59:59, April 28, 2025 (UTC+9)

From 5:00:00, May 3, 2025 to 4:59:59, May 5, 2025 (UTC+9)

From 5:00:00, May 10, 2025 to 4:59:59, May 12, 2025 (UTC+9)

During the weekend FULL BURST DAY event, players can receive double rewards in Interception and Simulation Room.

4.8 Daily Bonus Reward

* Event duration: From 5:00:00, April 26, 2025 to 4:59:59, April 28, 2025 (UTC+9)

From 5:00:00, May 3, 2025 to 4:59:59, May 5, 2025 (UTC+9)

From 5:00:00, May 10, 2025 to 4:59:59, May 12, 2025 (UTC+9)

Complete all daily missions during the event to obtain surprising rewards.

4.9 Skill Level Reset

* Skill reset duration: After the maintenance on April 24, 2025 to 4:59:59, May 1, 2025 (UTC+9)

* How to Reset Skills: Nikke → Character Info → Skill. Use the Skill Uninstaller to reset one of a character’s skills.

* Three Skill Uninstallers will be distributed through the in-game mail during the event period.

4.10 5×5 Supplies Event

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

During the event, log in daily and complete tasks to receive tickets. Use these tickets to flip tiles on the supply board or refresh the board entirely.

Earn Advanced Recruit Vouchers and various development materials!

4.11 Recruitment Rewards Event

Participate in the Little Mermaid and Mihara: Bonding Chain recruitment to receive bonus rewards such as Collection Item Maintenance Kits and Advanced Recruit Vouchers.

* Additional rewards unlocked upon reaching specific recruitment counts for each Nikke.

* Only Gem and Advanced Recruit Voucher pulls count toward recruitment counts.

* Recruitment counts and rewards are calculated separately for each Nikke.

* Recruitment counts will reset after the event. It cannot be carried over to future events.

5. Solo Raid

Solo Raid will be available from 12:00:00 on May 8, 2025 (UTC+9)! Mobilize parties to challenge the boss and obtain Harmony Cube materials, Favorite Item Maintenance materials, and Collection Item Maintenance materials. The Challenge Difficulty ranking is determined based on the total damage dealt. Rewards like limited avatar frames and gems will be distributed according to the ranking.

* Available from: 12:00:00, May 8, 2025 to 4:59:59, May 15, 2025 (UTC+9)

6. Union Raid

Union Raid will be available from 5:00:00 on April 25 2025 (UTC+9)! Challenge the Boss with your Union members, collect Union Chips, and exchange rewards!

* Available from: From 5:00:00 April 25, 2025 to 4:59:59 May 1, 2025 (UTC+9)

* Participation Requirement: Union should be Lv. 3

Please note that player is unable to remove Union members or leave the Union during Union Raid.

7. Coordinated Operation

Form a team of five Commanders and challenge the boss Harvester together! Players can either team up with friends and union members or join the challenge through automatic matching. Defeat the boss and get Broken Core to exchange Gems and development materials in the Recycling Shop!

* Event duration: From 12:00:00, May 2, 2025 to 23:59:59, May 4, 2025 (UTC+9)

* How to join: Lobby → Event → Coordinated Operation

8. Reshuffling of Arena Groups

Rookie Arena and SP Arena groups will undergo periodical reshuffling.

* Reshuffle Time:

① Rookie Arena: From 5:00:00, May 14, 2025 to 4:59:59, May 15, 2025 (UTC+9)

② SP Arena: From 5:00:00, May 21, 2025 to 4:59:59 May, 22, 2025 (UTC+9)

9. Simulation Room – Overclock Mode (Season 4)

In the new Simulation Room – Overclock Mode (Season 4), you’ll be able to select additional options and challenge new environments with higher difficulties. Upon clearing Simulation Room Overclock, you will obtain Skill Manual and Burst Manual at least once according to the highest Core Ratio. (If you haven’t claimed the previous rewards of Difficulty 5 Sector C in the current Simulation Room, you can obtain everything at the same time.) The rewards acquisition record resets every two weeks. Rewards can be obtained again after the reset.

* Participation Requirement: Clear Simulation Room Difficulty 5 Sector C

* Duration: From 5:00:00, May 6, 2025 to 4:59:59, July 29, 2025 (UTC+9)

* How to join: Lobby → Ark → Simulation Room

10. Outpost Themed Event

Check out the Outpost decorated by the Nikkes with festival ornaments and firecrackers for the 2.5th Anniversary!

11. Champion Arena (Beta Season 2)

The Champion Arena (Beta Season 2) will open on April 24, 2025. Champion Arena is a gameplay feature where Commanders who rank 4th or higher in the SP Arena’s Point Ranking will compete against each other. Simulated battles will be held, according to the designated schedules of the League, Promotion Tournament, and Champions’ Duel. During the Promotion Tournament and Champions’ Duel, players can predict the winner through the Cheer system. Players will receive Credits if their Cheer is successful. Additionally, exclusive avatar frames will be awarded based on the total number of times players achieve ranking.

12. Gameplay Updates

12.1 New Campaign Chapters

Added Campaign Chapters 37 and 38.

– Chapter 37: The struggle in the muddy puddle

– Chapter 38: The gluttony that devours everything

Entry Requirements: Complete Chapter 36 Normal Mode

12.2 New Lost Sectors

Added Sector 26 and EX-10 in Lost Sector.

12.3 Added a new Harmony Cube.

12.4. New floors in the Tribe Tower

The Tribe Tower stages will be increased from 950 floors to 1050 floors.

The Manufacturer Towers stages will be increased from 850 floors to 950 floors.

12.5 Added the mini game IN THE MIRROR to the Arcade.

12.6 Improved rewards for daily and weekly missions.

12.7 Added new profile card objects to Profile Decoration.

12.8 Added new titles.

12.9 Added new lobby backgrounds.

12.10 Improved rewards for Simulation Room and Overclock mode.

12.11 Expanded the achievement tiers for Manufacturer Character Upgrade Ranking.

12.12 Improved rewards for repeated clearing of Solo Raids.

13. New Commodities

13.1 Costume Gacha: Little Mermaid – Abyss Flower

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

Obtain rewards such as Little Mermaid – Abyss Flower, Advanced Recruit Vouchers, Equipment Level-up Materials after 10 draws.

* You can get a recruit chance by using the exclusive item, Deep-Sea Flower. Deep-Sea Flower can be purchased in the Ticket Shop.

For more details, please check the rules and probability information of Costume Gacha in the game.

As part of the 2.5th Anniversary celebration, receive Deep-Sea Flower x6 in the Costume Gacha shop for free.

13.2 Costume Gacha: Mihara: Bonding Pain – Pain Eater

* Event duration: From 5:00:00, May 1, 2025 to 4:59:59, May 22, 2025 (UTC+9)

Obtain rewards such as Mihara: Bonding Pain – Pain Eater, Advanced Recruit Vouchers, Equipment Level-up Materials after 10 draws.

* You can get a recruit chance by using the exclusive item, Rose-Colored Handcuffs. Rose-Colored Handcuffs can be purchased in the Ticket Shop.

For more details, please check the rules and probability information of Costume Gacha in the game.

As part of the 2.5th Anniversary celebration, receive Rose-Colored Handcuffs x6 in the Costume Gacha shop for free.

13.3 2.5TH ANNIVERSARY PASS

* Event duration: After the maintenance on April 24, 2025 to 4:59:59, May 15, 2025 (UTC+9)

After purchasing the Premium 2.5TH ANNIVERSARY PASS, complete daily missions to level it up and obtain rewards such as Advanced Recruit Vouchers. Win Grave’s special costume Beautiful You once you reach the maximum level.

13.4 May Mission Pass

* Sale duration: From 00:00:00, May 1, 2025 to 23:59:59, May 31, 2025 (UTC+9)

After purchasing the Premium Mission Pass, complete daily missions to level it up and obtain rewards such as Recruit Vouchers. Win Cinderella’s special costume Beautiful Me once you reach the maximum level.

13.5 New character packages will be available after the April 24, 2025 maintenance.

* Sale duration: After the maintenance on April 24, 2025 to 4:59:59, May 22, 2025 (UTC+9)

Please check the details out in Lobby → Cash Shop → Limited-Time Package.

13.6 Custom Package Update

* Sale duration: After the maintenance on April 24, 2025 maintenance to 23:59:59, June 11, 2025 (UTC+9)

Updated items in Custom Package.

Please check the details out in Lobby → Cash Shop → Limited-Time Package.

13.7 Monthly Package Update

* Sale duration: After the maintenance on April 24, 2025

New Monthly Packages are now available in the Cash Shop.

Please check them out in Lobby → Cash Shop → Ordinary Package.

13.8 End of Sale for Selected Packages

Certain packages will no longer be available for purchase after the server maintenance.

– Technical Support X

14. Optimizations & Misc. Updates

14.1 Detailed information regarding optimizations and bug fixes will be posted upon completion of the server maintenance.