A: The developer announced on Ci-en (December 2025) that Version 2.0 is the final update. "New" refers to the DLC’s release status as of early 2026.
He didn't delete her.
confirm that "Agent Sirius" is hitting digital shelves right now, following up on successful launches of previous titles like Exposed Livestream Why These Codes Matter (RJ388166 & RJ01259073) eng agent sirius dlc rj388166 rj01259073 new
: Ensure your base game of Agent Sirius is updated to the latest version compatible with the DLCs. A: The developer announced on Ci-en (December 2025)
, a hidden organization dedicated to battling the supernatural. The Central Mystery confirm that "Agent Sirius" is hitting digital shelves
| Feature | Agent Sirius (Japanese/RJ388166) | DLC "Kingdom of Betrayal" (RJ01259073) | Agent Sirius (ENG/Steam) | | :--- | :--- | :--- | :--- | | | RJ388166 | RJ01259073 | Agent Sirius (Steam) | | Required Base | None | RJ388166 | None | | Languages | Japanese | Japanese | English, Japanese, Chinese | | Genre | Detective RPG | NTR/Corruption Expansion | Detective RPG | | Key Theme | Brainwashing/Investigation | Betrayal/Jealousy | Brainwashing/Investigation | | Availability | DLsite (Original) | DLsite (Requires base) | Steam (Global) | | Avg. Price | ~$15 USD | ~$4 USD | Free to claim (Permanently) |