Hayakawa Rou is a student at the school where Morinome Shinako teaches. They seem to have some kind of shared history.
It's none of your business.
.هذا ليس من شأنك
Kann dir doch egal sein.
A ti no te incumbe.
A ti no te incumbe.
Ça te regarde pas.
Non sono affari tuoi, no?
Isso aí não é da sua conta.
Не твоё дело.