Calling all Doctors! It’s time to stock up on Sanity and gear up your squads. Hypergryph and Yostar have officially kicked off the Arknights 6.5th Anniversary Special Program, bringing a massive wave of content to the beloved tactical RPG. The centrepiece of this milestone celebration is the highly anticipated limited-time Side Story event, [FIRST OF A THOUSAND AUTUMNS].

Running from July 16, 08:00 (UTC-7) to August 13, 03:59 (UTC-7), this event packs a punch with brand-new elite Operators, unique gameplay mechanics, and a treasure trove of free rewards. Here is everything you need to know about what’s waiting for you in Yan!

Dive Into the Unwritten Chapters of Yan

The event offers three progression stages for Doctors to challenge: “Record of An Autumn’s End”, “Forgotten Prospect of Spring”, and “Unwritten Chapters of Yan”.

By clearing these event stages and completing the special [Proofreading of the Past] missions, you will earn event currency known as “Draft of History.” Take your hard-earned drafts over to the [Sky Mirror Teahouse] exchange shop to redeem premium goodies, including pieces of the exclusive Sky Mirror Pavilion Reception Hall furniture set, growth materials, and the tokens for the brand-new free 5-star Operator!

Meet the New Operators Joining the Fray

A new event means an incredible lineup of new characters to pull and recruit. The limited headhunting banner, [Ashes to Ashes, Ages on Ages], features some powerhouse additions to the roster:

• Wang (6-star Specialist – Limited): A master of tactical area denial, Wang uses his unique “Mold Stones” talent to deploy weiqi (Go) stones across the battlefield. These stones link together, allowing Doctors to command the flow of combat and trap incoming enemy waves with precision.
• Ch’en the Dawnstreak (6-star Guard): A stunning new alternate version of a fan-favourite, Ch’en deals devastating Arts damage. Thanks to her “All-Seeing Eye” talent, her attacks inflict Weakness damage that dynamically shifts types depending on her target, making her a premier choice for single-target elimination.
• Ju (5-star Sniper – FREE Welfare Operator): Available directly through the event shop, Ju targets the heaviest enemies first. His “Dogmatist” talent leaves defeated enemies at 1 HP and inflicts “Critically Wounded,” granting extra SP to whichever ally lands the final blow.

Massive 6.5th Anniversary Log-in Rewards

Yostar is being incredibly generous for this half-year milestone. From July 16 to July 30, all players can claim a Moon Night Homecoming Headhunting Permit, giving you a completely free 10-roll on the limited banner. Even better, you will get one free single pull every single day during this two-week window.

Don’t forget to check out the 2026 Festival Sign-In event as well. Logging in for a total of 10 days during the celebration yields extra goodies like Emergency Sanity Concentrates, Module Materials, and event-exclusive furniture.

Fresh Threads in the Outfit Store

If your favourite Operators are looking for a wardrobe upgrade, the store has you covered with the gorgeous new 0011 Collection, featuring “A Gallant Dream” for Ling, “Hazy Jade” for Dusk, and “Clear Morning View” for Yu, alongside new outfits for Surfer and Philae. Beloved older skins like Shu’s “Spring Feast” and Zuo Le’s “Youthful Journey” are also making a temporary comeback!

The battle for Yan’s history has begun. Make sure to jump in before the event wraps up on August 13! Who are you hoping to pull from the new banner? Let us know in the comments below!

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