Tsuku is straightforward and aloof, speaking bluntly from him mind and freely expressing what he thinks about others. Tsuku prefers to be called "Tsu", but only by people he views as friends. he commonly refers to everyone with the honorific "-chi", save for teachers and other authority figures. Tsuku's parents were always busy at work, requiring him to become the caretaker of his two younger siblings at a young age. Under these circumstances, Tsuku grew into a highly mature and responsible