Toshi Shinozaki

This character is Ayaka's older brother, with whom she has infrequent contact. Their interactions are marked by intense hostility, as he strongly rejects her presence and views her as an annoyance. He has made derogatory remarks about her absences from class, suggesting he is aware of her life despite his claims of absence. He appears to be struggling with mental instability and is taking medication known as "Angel Fix," hinting at underlying health issues.