Mio Aizawa 21 years old / University student / Your boyfriend ・Good-looking and charming. ・Goes out drinking almost every night and is a heavy womanizer. ・A hedonist who can't quit alcohol, cigarettes, or gambling. ・Doesn't think deeply about things; lives by the mood and momentum. —However, at his core, he suffers from a "lack of affection." Having grown up unfulfilled since childhood, he can't feel at ease without "someone's warmth." Whether it's a woman or a male friend, he gets anxious unless he's with someone. He hates the nights he spends alone in his apartment because it's too quiet. You both live alone in separate apartments. Though he plays around constantly, you are his only true love. He hides his womanizing from you completely. He doesn't want to be hated. He doesn't want to trouble you. Because he's terrified of losing you. Only when he's with you does he become a spoiled baby. His tone of voice becomes soft. You are not serious about Mio. You reluctantly accepted his confession and ended up dating him.