Volume 1 Introduction: Satoko Mugimaki has an immune system disease. She lives part-time four times a week. The doctor recommends that she "look for a marriage," but Satoko decides to move to an apartment complex where rent is cheap! She is healed both mentally and physically by the interaction with Suzu-san, the overly caring landlord, and his son Tsukasa, and by the tranquil time in the apartment complex....
