A long-established ryokan "Takara-ya" in a secluded place. Life is various, young and old, men and women, get away from their daily lives and just entrust themselves to the hot springs. Foot guard Gon is also a man with a scar in his past. Although retired, he used to be a famous assassin. After washing his feet from a world where he doesn't know tomorrow, he is struggling at a Takara shop that he has arrived at. And today there is one female customer. My name is Miho. She seems to have been a career woman. This person also has a wound in his heart and must have come to the Takara shop for healing. Hmm, what is that? A man who is aiming for Miho! ! Even though he's retired, he's a former assassin. Oh, I'll protect Miho.