1) Yes I do like NSFW stuff, especially when it is plot important. You could do two versions, like a more explicit scene and then one that glosses over it more? Like some games will specifically reference genitalia or have an option to omit specific references to it, that kind of thing. As others suggested you could also simply fade to black for those who don’t wanna read it if you’d think that’d work, too! Honestly if you don’t wanna do that though, just warning that there are non-skippable explicit scenes is also fine. Like people don’t can skim it/not read it lol
2) I usually try to make an MC that fits the Vibes of whatever game I’m currently playing. Definitely picture a more androgynous MC for Magenta, maybe femme leaning. Messy, fluffy hair they probably just run their fingers through to “comb” it since they seem to be a bit of a mess lol lots of just t-shirts and shorts, maybe a plaid shirt overtop. If they do “dress up” I picture them going for the “hot goth GF” look for some reason idk. On the shorter side but wears platforms to make up for it.ADHD haver like me (and also they kept forgetting shit which. Big Mood). Friendly but kind of Awkward around strangers, but suddenly becomes a lot more social if they're around someone even more awkward (like our sweet boy), tends to spoil the people they care about/can be easily swayed by them. Bit touch-starved which is how they're rationalizing hanging off Zu/letting him hang off them even tho I think a tiny part of them worries it could stunt his relationship(s) with others (but they really like him/the attention so. Torn.)
3) Yeah!! I mean, it IS a yandere game so it’d fit.
4) Font is good for me! I know some people add dyslexia friendly fonts which might be nice if you can swing it? But I’m not dyslexic so idk