Wait WHAT?! (Rin x reader x yukio)

You have known yukio all your life. You were best friends with him since you were a little girl/boy. You never knew he had a brother thought until you attended True Cross Academy and enrolled in the cram school. Yukio, your best friend, was the teacher which you thought was odd because you were older than he was. The first day of cram school you saw a boy there that looked a lot like Yukio. You learned that his name was Rin and you began to develop feelings for him until you figure out that he is Yukio's older twin!!! As you battle with your feelings to figure out who you love other characters join in along the ways that just confuses you even more. Join the whole Blue Exorcist cast in Wait WHAT?!