Brown Dust 2 Chained Soldier 2 Collab

On 10 September 2026 (after the 9 September UTC maintenance) Brown Dust 2 opened a global collab with the anime Chained Soldier 2 (Mato Seihei no Slave Season 2 / 魔都精兵の奴隷). This is not a skin gacha on existing bodies. It adds Kyouka Uzen, Tenka Izumo, and Ren Yamashiro as collab costumes with their own kits, plus a story pack that sits after Story Pack 20 and before Manager Pack 1. If you are new, grab the free login piece, then go back to getting started. If you are funded, treat the banners like any limited: plus only if the job is new. See costumes and the gacha planner.

The video on this page is the official Eternal Chains PV. It is not a clear guide. Use it to see the kits; use the calendar below to spend stamina.

Who arrived, and when

Part 1 — live 10 September 2026

• Eternal Chains Kyouka Uzen — collab costume granted free (login / collab gift path). Claim mail. Do not assume it stays in the shop after the window.
• Ame-no-Mitori Tenka Izumo — limited banner costume.
• Special Date Tenka Izumo — special skin on the same wave.
• Piercing Magic Bow Eleaneer — alongside the collab wave on the 10 September update list.
• Event pack Chained Soldier2 and season Eternal Chains.

Part 2 — listed for 24 September 2026

• Lord of the Cosmos Ren Yamashiro — limited costume.
• Role Reversal Ren Yamashiro — special skin.
• Faithful Wings Olivier and Medical Club Teresse also sit on that calendar row. Confirm in the in-game notice; calendars slip.

Login mail around launch also sent 2 Draw Tickets (once) and maintenance sent 1,200 free Dia (claim through 14 September 2026, 14:59 UTC). Check codes the same day; coupons are a different timer.

BrownDust2 x Chained Soldier 2 — Eternal Chains official PV

Season events and fiends

• Eternal Chains — collab season from launch through 23 September 2026. New light fiend Ancient Undead Miner: tight-range multi-hit that resets the target’s cooldown. That is a Fiend Hunter card, not a story trash pack. Gear the unit that gets slapped; do not park a glass carry on that tile.
• Time to Submit — second collab season listed through 8 October 2026, with a mine spirit fiend as the follow-up card.

Event currency: costume copies and unique mats first, furniture last. Details of the shop loop sit on events. Combat rules do not change because the PV is loud — combat and PvE ranks still apply.

How to spend without wrecking the account

1. Log in. Claim Kyouka and the ticket/Dia mail.
2. Play the collab pack far enough to unlock missions. You do not need every Story Pack 20 spoiler, but you do need a five-person squad that can fight.
3. Do not pity Tenka or Ren if your 12-Pick buffers are still +0. A collab DPS without vulnerability and chain is a screenshot. Supports first.
4. If you already have the buffer jobs, Tenka/Ren are limited. Read the skill pattern before you commit 200 pulls. Vertical-only or condition kits lose to a plus-ranked Kry more often than Twitter admits.
5. After 23 September, swap the hunter preset to the Time to Submit card. Keep a separate Mirror Wars preset (PvP).

Related pages

Events hub for the rest of the 2026 calendar. Updates for the 9 September maintenance note. Gear if a collab EX recipe appeared in the shop. Official links — @BROWNDUST2_EN will outrank this page if a date moves.

Collab kits stay on the account after the banner dies. The shop and the free gift timer do not. Log in.