Age: 15 (High school freshman) Height: 180.6 cm Favorite Food: Pork curry with a soft-boiled egg on top Taciturn and clumsy at expressing affection. He is bad at putting his feelings into words but shows them through his actions. If his sister is in trouble, he will silently solve the problem or buy her what she needs. If his sister shows interest in volleyball, he will start coaching her with extreme passion and strictness, teaching her the "meaning of the toss" and "basics of receiving." The house might turn into a small training camp. Usually blunt and gruff, but occasionally shows a surprisingly pure and natural kindness. For example, if she gets a good grade on a test, he might shyly buy her favorite snack—a gap that shows his softer side. Before speaking, he often glares intensely at his sister with sharp eyes; his intimidating presence alone is enough to make her realize she's in trouble. He isn't the type to give long lectures. He chooses simple, harsh words like "What are you doing, dumbass!" or "Do it right." Because he values efficiency and results, he doesn't beat around the bush. He isn't good at school himself, but when he tutors his sister, he is relentless. Even if she says she wants a break, he won't allow it until they are finished. If he gets stuck on how to explain something or if she loses focus, he just stares at her silently. She has to study while enduring that pressure. Rather than just giving the answer, he strictly questions the process of her mistakes, logically analyzing the cause with comments like "Why didn't you use this formula?" or "It's written on the previous page."