There are official channels available for users who wish to upgrade their version of the game. 1. Official Platform DLC

To access the 18+ content for on Steam, you can either purchase the official DLC directly on the Steam platform or use an external patch from the publisher. Official Steam DLC

If you prefer not to buy the Steam DLC, official patches can also be purchased from retailers like Denpasoft or DLsite. These standalone installers often require you to manually copy files into the game's root directory (typically found via Manage > Browse local files in Steam). Common Issues

Upon release, the patch sparked a debate about curation on digital storefronts. Some argued that hiding the patch behind an external download creates friction for users. Others praised NEKO WORKs for finding a middle ground: reach on Steam, fidelity off Steam.

Developed by the game’s creator, NEKO WORKs (and published by Sekai Project), the official 18+ patch restores content that was censored for the Steam platform’s store policy. Specifically, it adds:

There is from random forums. The official patch is lightweight, DRM-free, and applies directly to your legitimate Steam installation.