Kosya

Kosha is a Japanese author and developer. Publishes games on DLsite and Ci-en.
DLsite is a 2D content download site specializing in doujinshi, manga, H-games and more.
Ci-en is a platform that supports the ongoing activities of creators, video makers, streamers, store managers, etc. through positive reviews and monetary support from users.
The developer makes games on BDSM themes and a variety of sexual experiences.