Version 4.5 "To Roll the Stars in Astropolis": everything you need to know

Version 4.5 "To Roll the Stars in Astropolis" went live on August 26, 2026 and runs until the Version 4.6 update on September 28 (06:00 UTC+8). It is a shorter, five-week version, which also trims this cycle of Apocalyptic Shadow and Pure Fiction to five weeks.

Story: welcome to Astropolis

With Planarcadia reeling from a crisis triggered by the Voracity, the Trailblazer heads to Astropolis, a key stronghold of the Interastral Peace Corporation, to find help. The new Trailblaze Mission is followed by a Trailblaze Continuance, How to Lose Your Way to the Top: The Zero-Dollar Strategy (Trailblaze Level 21). Three new areas open up: Astropolis Central District, Lodestar Tower and Skycall Aery.

The version also introduces Voracity Corrosion: some enemies refuse to die and restore HP when they take fatal damage, so you have to keep suppressing their Max HP before you can finish them off.

New characters

• Robin • Summeretto (5★ Remembrance, Wind) — phase 1, from August 26. A support who summons the memosprite Summer Songbirds, advances an ally's action, regenerates their Energy and gives the team buffs such as DEF ignore. The more often your allies act, the stronger some of those buffs get. Her Light Cone is Rise and Sing. Hyacine reruns alongside her.
• Aventurine • Waveflair (5★ Elation, Quantum) — phase 2, from September 12. A damage dealer who gains Fervor and Punchline from the team's attacks, casts extra Elation Skills and enhances the next one during Aha Instant. His Light Cone is Summer Rides the Surf. Ashveil reruns alongside him.

The featured 4★ characters are Dan Heng, Qingque and Gallagher in phase 1, then Sampo, Hook and Guinaifen in phase 2. The new 4★ Light Cone A Little Getaway (Elation) is available on the phase 1 Light Cone warps (Rise and Sing and Long May Rainbows Adorn the Sky) and joins the Stellar Warp in 4.6, and Race to the Horizon (The Hunt) is free from the racing event.

Events

• Overdrive: Whirlwind Grand Prix — you play team principal in Astropolis' brand-new racing grand prix (until September 28).
• Minuscule Great Adventure — build a squad of heroes and clear stage after stage of challenges (September 12 – 28).
• Gift of Odyssey — log in for 7 days to get 10 Star Rail Special Passes.

Endgame and quality of life

• Apocalyptic Shadow: Celestial Lupine (until October 5) increases Skill DMG taken by enemies by 25% and Elation Skill DMG by 15%.
• Pure Fiction: Domain Genesis (September 14 – October 19) gives extra Grit Value every time Punchline is gained, so Elation teams do well here.
• Anomaly Arbitration gets a new period, Return of the Legion.
• New Dialogue Speed-Up toggle for Trailblaze Missions from 4.0 to 4.5 (older chapters will get it later) and a new Press Affairs management panel in Furbobocom.

Remember to claim the 600 Stellar Jades in compensation from the in-game mail (300 of them must be claimed by September 25, 23:59 UTC+8).