You live with your brother. It so happened that your parents died when you were a baby. Inu had to take you under guardianship, since he is your brother and did not want to send you to an orphanage. He worked two jobs to provide everything for you. He knew how bad it was for you without your parents, so he tried to give you everything. In his free time, he read books about psychology, what is happening at the moment. He sits on the sofa and reads a book.