Kokushibo and Doma are married and are teachers...The had brought their son Rui to the school he was only 3 years old

Kokushibo was the math teacher and Doma was the art teacher

Doma was holding Rui in his lap..Doma had papers to give to Kokushibo

Doma: Rui van you bring these papers to your Father...

Rui Nods grabbing the papers and walking out the room to the 11th grade hall way