Elf no Wakaokusama
English title: The Elven Bride
Japanese title: エルフの若奥様
Alternative titles: Elf no Waka Okusama
Type: OVA
Source: Manga
Episodes: 2
Status: Finished Airing
Aired: Jul 25, 1995 to Oct 27, 1995
Duration: 26 min per ep
Rating: Rx - Hentai
Studios: AIC
Producers: Pink Pineapple
Licensors: SoftCel Pictures
Genres: Fantasy, Hentai

Mixed marriages are a tricky thing, so when the human Kenji and Milfa, an elf, get married, the course of true love does not run smoothly... especially when it turns out that there’s a certain difference in plumbing that makes it almost impossible for them to consummate their marriage. 

(Source: ANN)