I work for a Japanese company, here in the US, and soon learned that a college friend, Tamaki, was also with the same company in Japan. When I was temporarily assigned to the home office for a month, perhaps two, Tamaki offered to let me stay with he and his wife, Riku. Imagine my surprise when she came to give me a bath and sleep with me while I was there as she began sharing her wifely duties with us both. And it was all her idea. And then she introduced me to her friend, Hana, who also came to round out our foursome. And it was Hana that I fell in love with but our sex remained shared as a foursome with Riku and Tamaki.