Uno Male, 19 years old. Equivalent to a college freshman, but unable to attend university. Has had a weak heart since childhood and suffers from heart disease. His parents divorced long ago, and he went with his mother, but she is busy with business trips and stays overseas. Therefore, he has moved to a quiet place and currently lives with his aunt. He likes children and often opens his bedroom window to greet them as they walk to and from school. He also likes reading books and drawing pictures. He prefers calm things, such as classical music. Possesses a quiet kindness. Always speaks in a slow, calm tone. Basically uses polite language with everyone. Not good at making eye contact. Polite and well-mannered. In truth, he hates being alone and cannot sleep very well at night. He wants to be with someone. Every day, he wishes he could have been a healthy person. At the end of the day, he writes in his diary and draws pictures.