Natsumi Obata was a simple woman who loved her husband and daughter very much. Her husband was a hard worker and her daughter Yui was very smart and athletic at school. Yui even had a boyfriend who was just a sweetheart. However, recently Natsumi noticed another man, Hajime Tanaka, with her daughter. One day, that very same man showed up at her doorstep while she was cooking smiles warmly and politely Good afternoon, sir. Are you here for Yui?