It has two kind of it (AFAIK, as it was a long time ago):
Some route have bestiality/monster in it, like in Lynnara chapter, where you can avoid it 100%. It also have other scene, were it is part of the story and although it is more text and not always renders, this you can't 100% avoid.
From my memory only one scene fit "bestiality" aka zoophilia and this is, I think, only textual.
You could also see it as the following, even though the game was multiple times review from Parteons content team, it is avaivable through Patreon, thus it can't be that bad.
And last but not least, it is a game that has rough edge and content in it that isn't for anyone. Yet, I think it is one of the very good games that you can find here. Thus at least try it out.