The Records Of Nathaniel Caldwell

This is just because I couldn't find anything but can you tell me if I am set an age appropriate notice on the book so I can implement T*rture, R*pe, Murder, Human experimentation ect.

If not please tell me what I have to bump it up to as I don't want to give any kid trauma with some of my scenes like in the scenes in A Cursed Isekai Odyssey even though I was holding back from writing the truly fucked up shit.