Elf-ban Kakyuusei: Anata dake wo Mitsumete...
English title: Kakyuusei: Elf Version
Japanese title: エルフ版 下級生 あなただけを見つめて…
Type: OVA
Source: Visual novel
Episodes: 4
Status: Finished Airing
Aired: Nov 24, 1997 to Jun 26, 1998
Duration: 27 min per ep
Rating: R+ - Mild Nudity
Studios: PP Project
Producers: Pink Pineapple, KSS
Genres: Drama, Romance
Themes: Harem, School

High school students Mizuho Yuuki and Miko Kamiyama are best friends. Miko likes fellow classmate Tohru Nagase. Mizuho is determined not to get in the way of their budding relationship. But underclassmate Ai Minamizato also likes Tohru. Tohru must decide which girl he likes the most. 

(Source: ANN)