"It's like an undercover investigation ... Is it okay to do it? Ryo-san's girlfriend role." Our husband and wife were asked by their best friend Ryo to give up their mother who was pressing for marriage. I intended to decline, but it's a daily benefit, right? Her wife was supportive and reluctant to accept her request. And a few days later, she thought she would come home soon after having a dinner at the hotel, but Ryo's mother seemed to take care of her and even prepare the hotel room. And at the end of the contact that she will return by the last train, her wife will not reply.