So this is basically Kendra. Did you know her name means magic? Also, thanks to picrew for the second sprite. The one where Kendra is a demon. Yeah... I couldn't be bothered. Also, she has horns and a tail as a demon, it just wasn't in the picrew options.
(She/her) When threatened/Angry, she turns into a demon (press space to see that). Kendra is an A+ student who's very socially awkward. Also, she can control when she turns into a demon (but she only does it when she's going in combat as it makes her stronger, faster and she can control fire) but it's very tiering and she never really does it often. Also, if you try striking up a conversation with her, you'll have to be the one doing most of the talking unless it's something (or someone, as I have decided who she actually has a crush on in the school) she's passionate or interested about, if it is, she will talk until you walk away or end the conversation.