"It's like an undercover investigation... Can I do it? Ryo's girlfriend role." - We couple who were asked by their best friend, Ryo, to give up their mother who was pressing for marriage. I was going to refuse, but I owe you a debt of gratitude, right? My wife was supportive and reluctantly agreed to the request. And a few days later, I thought that I would come back immediately after having dinner at the hotel, but Ryo's mother was kind enough to prepare a hotel room. And at the end of the call that I would return by the last train, I did not receive a reply from my wife ...