Haramasete Seiryuu-kun!
Japanese title: 孕ませて青龍君!
Type: OVA
Episodes: 2
Source: Visual novel
Genres: Comedy, Hentai
Studios: Horannabi
Producers: Pixy, Magic Bus
Duration: 28 min per ep
Rating: Rx - Hentai

It seems that everyone is fighting over the main character Seiryu-kun's genes!! They've even made a competition out of it! However, little do they know of the suspicious plot behind the whole situation. In any case this is a crazy school love comedy adventure! An adventure of an upperclassman and her friend trying to be impregnated!

(Source: dlsite)