Seishirō Hīragi/Relationships

Tenri Hīragi
His father and the head of the Hīragi family. He is loyal to him enough to threaten reporting Kureto's actions to him.

Kureto Hīragi
His brother and the next head of the Hīragi family. Kureto threatens him when he is about to report Kureto's betrayal and with Aoi reinforcing him at the time, he is powerless to do anything but adhere to Kureto's orders.