Oh god this is so perfect...I think mob wouldn't be like a genuine creep in anyway but just repressed and going through puberty and reigen would definitely be that weird neighbor kid who got touched and has no boundaries and mob being a horny teenager and deeply inexperienced would easily give in long story short mob knows better sort of but not enough and reigen is 11 abused and has no idea what's actually appropriate and its cool to hang out with older kids...