Issho ni H Shiyo
Genres: Hentai
Type: OVA, Episodes: 6
Aired: Dec 20, 2009 to Dec 9, 2011
Studio: Studio Boogie Nights, Mouse
Source: Original
Rating: Rx - Hentai
Synopsis:
Your childhood friend has no place to spend the night. She asks you if she could stay at your place. You obviously agree. She comes a little drunk and upon seeing that you have no girlfriend and fap only to hentai (tissues), she decides to make you a man. 

(Source: AniDB)