Hitozuma Koukan Nikki
English name: Wife-Swap Diaries
Genres: Hentai
Type: OVA, Episodes: 2
Aired: Jul 10, 2009 to Oct 9, 2009
Studio: Y.O.U.C
Source: Visual novel
Rating: Rx - Hentai
Synopsis:
Kouichi lives a happy life with his wife, Kanako, and daughter, Nao. But one day, Kimihiko, his neighbor, says to him, "Do you wanna fool around with a married woman?" "What?" What Kimihiko suggests Kouichi is to swap their wives. Kouichi doesn't take it seriously at first, but....

(Source: ErogeShop)