Kenji is found unconscious and amnesiac by Yuriko, owner of a financially troubled inn. She rescues him, provides shelter, and names him Kenji due to his total memory loss.

Before his amnesia, Kenji trained as a chef under Yuriko's late husband, giving him deep familiarity with the inn's culinary traditions. His resulting cooking skills become vital to reviving the inn's reputation and economic health, directly countering the crisis caused by the loss of its original chef.

Kenji also possesses advanced knowledge of sexual techniques. He proactively instructs Yuriko and her ex-sister-in-law Fuyuka in these arts to enhance the inn's services and generate revenue, approaching this as practical skills training to improve service quality.

A romantic relationship develops between Kenji and Yuriko during his stay, complicating his role as he balances personal feelings with his contributions. Discovering Yuriko's prior involvement in sex work does not disrupt their bond; instead, it integrates into his efforts to professionalize the inn's offerings.

The mystery of Kenji's pre-amnesia identity persists, with narrative hints suggesting his forgotten past holds deeper significance for the inn's future, positioning him as a potential long-term savior. The circumstances of his injury remain unexplained.

Kenji acts as a catalyst for the inn's recovery through his multifaceted skills. His actions directly stabilize operations by addressing both culinary and service deficiencies. His integration into the inn’s daily functions and relationships drives its financial and symbolic restoration.