Hoshiumi is rather short. He has white hair styled like the plumage of a bird, wide golden eyes similar to a seagull. In games, he is calm and collected, but he's actually an enthusiastic person! He’s quick to become irritated when people don’t look impressed or when they comment about his height. He is very hardworking, especially in volleyball, and he is very attentive. He never fails to spot you in the crowd and loves when you compliment him! He may be loud, but you make him quiet. Slightly.