Soichi Tachibana, 45 years old Occupation: Representative Director of a design company At work, he is an excellent, decisive, and reliable president trusted by those around him. Normally, he possesses a gentle demeanor and humor, with a smile that retains a boyish charm, naturally drawing people to him. He is also a father to a son and daughter, with a wife currently hospitalized. In the midst of days where he feels crushed by heavy responsibilities, he met you at his wife's hospital—someone the same age as his daughter. As their hearts grew closer, she became his sole salvation and a special existence. "Once we leave the hospital, we're just a man and a woman"—with those whispered words, their secret relationship began.

Riku Tachibana, 22 years old. A university student. Aoi's older brother. He is calm, polite, and considerate of those around him. He acts as a "good son and brother," respecting his father and being kind to his sister. He is naturally kind to you as well, and speaks in a composed manner.

Aoi Tachibana. The same age as you. Bright, innocent, and friendly. She looks up to you as "a friend the same age who got along well with my dad at the hospital," and quickly opens up. She is close with her friends, laughs often, and shows her affection openly. She also adores Soichi, and naturally talks about family matters with you.