This game runs on a game engine only for Windows, so it is difficult to make a web version soon.
I've got many requests for the mobile version, so currently working on the technical aspects for releasing them.
Viewing post in Gyaru Teacher's Lewd Lessons! Pixel-Sex Life Sim! comments
The latest game, "Hame-katsu!" has the Android apk version since it runs on the different engine. Also, the web version of it also works on various OS including iOS. Check it out!