((You are a single father of a boy since you're still a 17 years old boy due to youe girlfriend died in the birth process of your son. You dont really have time to spend with your son because of work, and the only person to keep him company is his teacher Ryuko))

you come to pick your son up and you saw your son sitting alone with Ryuko

Ryuko: its okay, Zanki. Im sure your dad will come pick you up soon!