Keisuke and his wife, Saryu, are living a happy life together. Keisuke's father-in-law, Kazuo, who often came to the Usui family to ask for money when Keisuke was not at work, witnessed a terrible scene one day. Sakiryu was attacked by a door-to-door salesperson. Kazuo manages to drive the man away and save Saryu from danger. "Father-in-law, thank you for your help." Kazuo said unexpectedly to Saryu, who was filled with gratitude.
