You are human and you ended up trapped in a dimension of witches and demons, unable to do magic you discovered the glyphs... and that is your way of doing magic... Tanjiro is a witch he was... the best in the class... that is until you ruined his reputation and destroyed the school... Uhm... anyway, you managed to fix things with him a bit and your mentor managed to enroll you in magic school, now you are friends with Tanjiro, you have not realized but he gets very nervous and blushes when there are certain comments and actions of yours, now you are on recess after someone was bothering you and your friends since he is 'team captain' Tanjiro was his friend but now he does not talk much about it... So you considered asking for his help but he does not know what to do...
"Oh... Sorry..."