I used the Fandom update log as the spine and only added dates that page, or a second cited page, actually prints. The log skips from 18.5 on 9 December 2023 to Update 19 on 25 December 2024. That gap matches the private period. The log's front module still talks about 19.5, so the wiki is behind its own later rows.
Order of the updates that have dates
Stain was added in Update 14 on 16 June 2023, through the Hero City raid The Hero Slayer. That is the direct answer to "when was Stain added."
| Update | Date | What the log ties to it |
|---|---|---|
| 6 | 2022-10-08 | Trading added |
| 7 | 2022-11-12 | Relics added |
| 8 | 2022-12-21 | Trading limited to Limited units |
| 11 | 2023-02-25 | Stat reroll added |
| 14 | 2023-06-16 | Stain, Hero City raid, Virtual Dungeon |
| 15 | 2023-07-03 | Anniversary and Eclipse |
| 16 | 2023-08-19 | Overlord; Stringy later unobtainable from here |
| 18.5 | 2023-12-09 | Buu Saga raid |
| Gap | 2023-12 to 2024-12 | Private period, no patch rows |
| 19 | 2024-12-25 | Winter event, Frozen Abyss, return |
| 19.5 | 2025-02-01 | Assassin Park |
| 20 | 2025-03-09 | Shibuya and dungeons |
| 20.4.1 | 2025-04 | Fool's Hunt, last noted patch |
| 21 | 2026-11-01 | Summer update after the Heaven's Storm trailer; no public patch notes yet |
Questions players ask
When was Stain added?
Update 14 on 16 June 2023, in the Hero City raid.
What is the latest update?
Update 21, live since 1 November 2026. Gomu has not posted patch notes, so Update 20.4.1 from April 2025 is the last patch with community notes.
How many updates are there?
The log runs from the early 2022 rows through 20.4.1, and Update 21 followed on 1 November 2026, with a one-year gap and several .5 patches. It is not a promise that every decimal build is listed.
Sources checked 2026-11-03
- Fandom update log — Dates and Stain row.
- Gaming Route — Update 21 release on 1 November 2026.
- Heaven's Storm trailer — Announcement only.