Blue Archive Chiaki Swimsuit is a free one-star student in the Set Sail with the Pandemonium Society event. To get her, unlock the event by clearing Normal Mission 2-3 and then complete Story-01. That first event story is the unlock requirement. You do not need to spend Pyroxenes or use any of the anniversary’s free recruitment pulls to obtain her.
Blue Archive Chiaki Swimsuit arrives with the November 10, 2026 fifth-anniversary update. The event’s playable period ends November 24 at 01:59 UTC, while the shop and certain other event menus remain open until December 1 at 01:59 UTC. If all you want is the new free student, you can get straight to the relevant story instead of worrying about the separate Makoto and Satsuki banners.
How to get Blue Archive Chiaki Swimsuit for free
- Clear Normal Mission 2-3 to meet the event participation requirement.
- After the November 10 maintenance, open Set Sail with the Pandemonium Society from the live event area.
- Enter the event’s story section and clear Story-01.
- Check the completion reward and your student list for Chiaki (Swimsuit).
That’s all you need to unlock Blue Archive Chiaki Swimsuit. She’s the Story-01 clear reward, so you don’t need to clear later challenges or buy her from the event shop.
Do you need to summon Blue Archive Chiaki Swimsuit?
No. Blue Archive Chiaki Swimsuit is an event reward, not one of the two new limited three-star Pick-Up students. The gacha banners accompanying this update are for Makoto (Swimsuit) and Satsuki (Swimsuit). Chiaki is obtained through the event story. The distinction matters because the same anniversary update is also handing out 200 free recruitments.
Those 200 free pulls are useful for the eligible limited Pick-Up banners and the new Recruitment Charges and Mileage systems, but they are not a requirement for recruiting Chiaki (Swimsuit). If you are only returning to the game for the free event student, clearing the short opening story is the priority.
When can you unlock Chiaki (Swimsuit)?
The event opens after the Tuesday, November 10 maintenance. Nexon scheduled that maintenance from 02:00 to 07:00 UTC, but it can finish at a different time. Once the event is live on your version of the game and you meet the Normal Mission 2-3 requirement, you can begin Story-01.
| Milestone | Date or requirement |
|---|---|
| Event opens | After November 10, 2026 maintenance |
| Entry requirement | Clear Normal Mission 2-3 |
| Student unlock | Clear event Story-01 |
| Playable event ends | November 24, 2026 at 01:59 UTC |
| Shop and reward grace period ends | December 1, 2026 at 01:59 UTC |
The shop’s December 1 cutoff should not be read as an extension of the story and stage play period. If you have not unlocked Blue Archive Chiaki Swimsuit, aim to clear the relevant story during the November 10 to 24 event period rather than banking on a later reward-claim menu.
Is Chiaki (Swimsuit) the same as regular Chiaki?
No. The swimsuit version is a different student variant from Chiaki’s regular version. Both are part of the same wider Blue Archive cast, but the event is offering the swimsuit variant as its one-star story-clear reward. The regular Chiaki Pick-Up from the earlier November rotation is not the route to this event reward.
Can you get extra Chiaki Eleph from the event?
Nexon’s event announcement confirms Chiaki’s unlock, but it doesn’t give a complete breakdown of additional Chiaki Eleph by stage or shop. Check the live event rewards before committing AP to a particular farming route.
What if Chiaki does not appear after Story-01?
If Chiaki isn’t in your roster, check whether Story-01 actually shows as cleared. Look at the stage rewards and student list again; don’t use recruitment tickets on the regular Chiaki banner expecting the swimsuit version.
Related Guides
Official source: Nexon’s November 10 Blue Archive patch announcement.
