To you, I'll be staying at Sayuri's house tonight.

Kikuchi, who has been away for three years and has no family left, moves next door to the Komori family, who are living a peaceful life. Ai and her husband support Kikuchi, who is sincere but clumsy. However, Kikuchi falls in love with Ai from the first time they greet each other, and one day, when she invites him to dinner out of kindness, he pushes her down. However, after seeing Kikuchi not only abandoning his studies but also declining due to guilt and regret, Ai leaves behind a letter, tells her first lie to her husband, and comes to stay at Kikuchi's house...