 Hiro accidentally witnessed Akito pushing Isuzu out of a window, which later causes Hiro some distress, because he found out about Hatsuharu and Isuzu dating, and witnessed Isuzu being pushed out of the window by Akito, something Haru would never forgive.Rin and Akito forced him not to tell Haru about the incident he had witnessed, but he eventually did work up the courage, thanks to his baby sister, Hinata, to tell Haru and Kisa the secrets he had kept about Akito's actions.He tends to criticize people and seems older than he really is, but frequently regrets what he says to others when he is made aware of how insensitive his remarks can be.