Hey guys, I'm looking for a shoujo one shot about a magic school where the heroine is in love with the "bad guy" of the school. He isn't really a bad guy, a lot of things happen. I know it ends with her trying to make herself look older and more mature for him, but it ends up in her passing out.
I know my description isn't that detailed, but I'm really desperate to find it. [m]

is it the oneshot at the end of kiss ni juuzoku?