Stringendo+Accelerando Ultimatum Sera
Japanese title: ストリンジェンド & アッチェレランド ULTIMATUM ～SERA～
Type: OVA
Source: Manga
Episodes: 3
Status: Finished Airing
Aired: May 23, 2008 to Oct 31, 2008
Duration: 28 min per ep
Rating: Rx - Hentai
Studios: Maboroshi Koubou
Producers: Pink Pineapple
Genres: Hentai

School is a place for learning and gaining knowledge for the sake of the future but very few know of what happens between couples/students behind the scenes which could be considered learning but in a more intimate way.

(Source: ANN)