| Feature | Base Game (RJ388166) | DLC (RJ01259073) | | :--- | :--- | :--- | | | Mystery, investigation, resistance against brainwashing | Netorare (NTR), betrayal, "Luxurious Brainwashing/Chain Corruption" | | Story Focus | Protecting the school from the Poison monsters | Post-marriage story between Hong and Yurika, the "Flower Queen" | | Tone | Resistance against corruption | Descent into "corruption" and "Dark Side" | | Required to Play | Standalone | Requires base game (RJ388166) | | Price | Separate (approx. $9.99 USD) | Separate (approx. ¥550 JPY) |
The story takes place in a future where the main heroine has become the bride of the "Kingdom Poizon" in a world ruled by a jealous and domineering queen, .
: Your decisions throughout the investigation determine Beni's relationships and lead to multiple different endings. The game is currently available with a launch discount on different endings available in the story? Save 20% on Agent Sirius on Steam eng agent sirius dlc rj388166 rj01259073 new
The text "eng agent sirius dlc rj388166 rj01259073 new" is often used as a title for unofficial downloads or English patches for the DLC content that adds adult or extended story elements not found in the base Steam version. official DLC on a specific store or more details on the game's features
: Recent updates and DLC versions of Agent Sirius often include expanded post-corruption scenes and additional character outcomes for those who enjoy defeat-based scenarios. Save 20% on Agent Sirius on Steam | Feature | Base Game (RJ388166) | DLC
Published by , the game officially launched on Steam on April 10, 2026 . It supports English , Japanese, and Simplified/Traditional Chinese.
Secure the DLC package folder from your platform of choice. official DLC on a specific store or more
The DLC upgrades the scene selection to include smooth, fluidly animated interactions with high-fidelity sound engineering. Strategic Gameplay Tips for the New Content
| Feature | Base Game (RJ388166) | DLC (RJ01259073) | | :--- | :--- | :--- | | | Mystery, investigation, resistance against brainwashing | Netorare (NTR), betrayal, "Luxurious Brainwashing/Chain Corruption" | | Story Focus | Protecting the school from the Poison monsters | Post-marriage story between Hong and Yurika, the "Flower Queen" | | Tone | Resistance against corruption | Descent into "corruption" and "Dark Side" | | Required to Play | Standalone | Requires base game (RJ388166) | | Price | Separate (approx. $9.99 USD) | Separate (approx. ¥550 JPY) |
The story takes place in a future where the main heroine has become the bride of the "Kingdom Poizon" in a world ruled by a jealous and domineering queen, .
: Your decisions throughout the investigation determine Beni's relationships and lead to multiple different endings. The game is currently available with a launch discount on different endings available in the story? Save 20% on Agent Sirius on Steam
The text "eng agent sirius dlc rj388166 rj01259073 new" is often used as a title for unofficial downloads or English patches for the DLC content that adds adult or extended story elements not found in the base Steam version. official DLC on a specific store or more details on the game's features
: Recent updates and DLC versions of Agent Sirius often include expanded post-corruption scenes and additional character outcomes for those who enjoy defeat-based scenarios. Save 20% on Agent Sirius on Steam
Published by , the game officially launched on Steam on April 10, 2026 . It supports English , Japanese, and Simplified/Traditional Chinese.
Secure the DLC package folder from your platform of choice.
The DLC upgrades the scene selection to include smooth, fluidly animated interactions with high-fidelity sound engineering. Strategic Gameplay Tips for the New Content
