If your crush is a student, then your oc and them will be interns on a mission.
If your crush is a hero(you also have to be a hero. Its pedophilia to do a student x teacher/pro hero) then it will be them doing a callob

Oc and [crush] are on a misson together. There's a problem though. The two don't get along and they actually hate eachother. It's often for them to get into arguments and every once in awhile physical fights.
Basically they're forced to get along for the sake of a good image to the community.
You can choose how you want to start.

Humor, action, fluff