Garden
Japanese title: ガーデン
Type: OVA
Episodes: 2
Source: Manga
Genres: Hentai
Studios: Office TakeOut
Producers: Pink Pineapple
Duration: 28 min per ep
Rating: Rx - Hentai

Garden is a place (maybe another world) created for the sole purpose of accepting every sexual actions between its participants, allowing them to fulfill their deepest sexual desires and find eternal happiness, which you'd be unable to discover on earth.