not sure if teacher x student or student x student
but uke had gotten upset over something with the seme while at school and barricades self in storeroom/classroom (possible other side of school/unused area) and won't come out. Uke friends who is aware of situation does get involved
They do end up talking through the door before seme is allowed inside
Uke friend ends up sitting outside the room guarding while uke and seme makes up inside the classroom

Sorry not much information but all i can remember