I have been married to my wife Rinko for 5 years, and we have been living together for 10 years. - The couple now live in separate beds and have not lived together for over a year. - What we enjoy is having BBQ with Mr. and Mrs. Uchimura who live in the same apartment building. - We both had the problem of sexlessness. - During the BBQ, Mr. Uchimura came up with the idea of exchanging couples when I said "swap", and we ended up exchanging couples for just one day. - The exchange couple started with the hope of stirring up each other's jealousy, but they never expected that Rinko would be taken away from them...