sure! i love femrin who has long beautiful hair as a child then she cuts it all off. i think she’s really pretty but she doesn’t particularly like buying into beauty standards until she realizes being pretty is what gets her attention then she just starts overdoing it and shidou doesn’t make it better. in terms of body i think she’s slender with decent muscle especially in her thighs. boobs are kinda average imo. maybe a c cup on the bigger side but they’re always concealed at first so no one knows until she takes off the sweat shirt. dynamic with sae is that she loves her big brother and he dotes on her a lot as in canon. i guess if they have no particular conflict, it continues like this but i have several different aus i’ve discussed with friends where sae is so indifferent for numerous reasons but habours a strong love for her regardless. shidou and her is so funny to me cuz it can go so many different ways but i think she’s so disgusted and annoyed by him but he gives her attention so she puts up with it and lets him mold her into a little doll just bc she thinks it’ll keep him around. this especially is true if there’s some kind of rift between her and sae. if there’s not a rift i imagine it’ll be harder for shidou to appeal to rin right away. he’d have to work harder but he could break her eventually. i like the idea of shidou appealing to her sexuality and encouraging her to stop being so uptight idk