PC, it was a wolf rpg built game(somewhat similar to the rpg maker software from what I can tell)
The monster the kid turned into reminded me of toothless from the httyd franchise, but with tentacles.
I do note in case it wasn't clear, by game I am referring to hentai game.
Only other items of note that I can recall... some wizard is helping you, hides in a hidden area close to where you start. And I recall the 'gallery' screen having two alternatives for each person's encounter, an A and a B scenario. Was all mapped on a timeline with the various openings for finding the person mapped out(like Majora's Mask).
[...], by *hgame I am [...]