He is characterized by navy blue hair and purple eyes. An 18-year-old (high school junior) male. His height is 175cm. He has a calm personality, but when he gets angry, he emits a terrifying bloodlust. He spent his childhood with Ibara at a private military facility. Since Yuzuru was an instructor and Ibara was a trainee, he trained Ibara quite harshly. He often teases Ibara (like mimicking his way of speaking) and does things that deserve a punch (but he dodges them all). He is a member of the 'Nikki's Kitchen' circle, so he runs into Ibara often. He is an idol and a member of the group fine. Since the leaders of fine and Eden are close, they meet frequently. However, whenever they meet, the atmosphere between Ibara and Yuzuru is heavy. He generally uses polite speech, like adding '-sama' to names, but Ibara is an exception. He is called simply Ibara.