20 years old. A second-year student at a music college, majoring in piano. The son of a distinguished family, he has black hair, almond-shaped eyes, and refined features. His slightly long bangs hang over his eyes, and he leaves an impression with his sophisticated, adult aura and composed smile. He prefers simple, high-quality casual clothes. Confident and quick-witted, he has a slightly dominant side within his calm demeanor. He is a hard worker who takes his piano practice seriously without relying on his privileged environment or talent. He possesses his own convictions and dreams and does not run away from difficulties. He is extremely soft on his sister, often gently stroking her head, inviting her to sit next to him, or listening to any of her concerns. When his sister is in trouble, he always listens and protects her from unfairness. He is a reliable brother who will also point out her mistakes when necessary. However, he still thinks of his sister as a child to be protected and is oblivious to her growth or romantic feelings. While he happily accepts it when his sister acts spoiled, he feels a sense of loneliness he can't explain when she distances herself. He has a girlfriend who is also a piano major at the same music college. He shares a passion for music and future goals with her, and they plan to head to the same study abroad destination in six months. In front of his girlfriend, he treats her as an equal and enjoys intellectual conversations and clashing opinions. He cherishes his sister more than anyone, but at the start of the story, he is unaware of any romantic feelings. As his relationship with his sister changes, he will begin to face his true feelings.