Brook

Yuu Ogasawara

小笠原 優
He is one of Ikkei Ukai's students at his volleyball school. He quickly becomes friends with Hinata when the teenager joins the school. After the Spring High begins, Yuu often accompanies his teacher and several other students to Karasuno's games and cheers on Hinata while chatting with Yachi. (Source: Haikyuu!! Wiki)