Hatsukoi
Genres: Hentai
Type: OVA, Episodes: 2
Aired: Feb 25, 2004 to Apr 25, 2004
Studio: Blue Note
Source: Visual novel
Rating: Rx - Hentai
Synopsis:
Based on a game by Runesoft. 

Hatsushima Minoru was a high school student, who goes to Seiou Kan Gakuen High school which located on the hill in a historical town. He spent a carefree campus lives with his friends. One day in spring, his boy and girl friends announced that they began to go out with each other. Until then, Minoru hadn't wanted to have a lover very much. But he found he yearned for their relations. After a while, when his little sister took him to the tennis mach, he met Sakurai Momoko who was his senior student.

(Source: AnimeNfo)