To start with, this was one of the better H-game that I found. However, I think you might have some copyrighted material that you did not source/credit. I might not have caught all of them, but the ones that stood out to me were:
- The manga that Judie was reading. The "cover" is a cover spread from one of the Initial D manga.
- The page that Judie was reading is a page from the hentai manga なついろ (Natsuiro) by まー九郎 (Ma-kurou).
- The Neon Genesis Evangelion cover is done by Animenz Piano Sheets (as far as I can tell as an avid fan of his).
I checked your credits section on the main screen and none of these were referenced anywhere. I may be mistaken, but I'm pretty sure that you did not contact anybody for permission to use those assets.
I know that I'm not the most vell-versed in copyright laws, but I think you should have at least credited them somewhere even if this is a free game. Again, I may be mistaken, but I believe that a game developer of all people should understand that stealing assets without credit is unacceptable.
I'm deciding to leave this as a public comment as I want others to be aware if you did steal those assets (including those that I did not recognize) or if you actually did credit them correctly (I did not read through all of your development logs, but then again, I shouldn't have to in order to find the source).