Hey ! I've been trying your game and I have one or two suggestions on the content warnings.
First of all I think you should mention when a specific trigger is visible on CG or if it just written, because seeing something gore on screen for example could be worth than just having a written description of it.
Also I think there should be a content warning for what happens in ending 1 of Sebastian's route, something about the kind of wound that is inflicted on the MC and/or maybe something about the state she finds herself in afterwards.
Also you know the warning that appears on screen before NSFW scenes ? Maybe you could do something similar before violent scenes, that way we could know when to expect them and brace ourselves lol.
That's all I noticed for now I think. I don't know what to think of the game so far but it has me intrigued !
Good luck in your development.