School Days: Magical Heart☆Kokoro-chan

OVA that came with the PlayStation 2 game "School Days L×H" Makoto, Sekai, Kotonoha, and many other classmates all go to a hot springs hotel to relax, where they discuss what their plans are for the upcoming Valentine's Day. When the day actually comes, half a dozen girls fight over who gets to give chocolate to Makoto.

The OVA features six separate stories revolving around the cast, some of which border on the bizarre; one of which is an MMORPG environment being played by Konata, Kagami, Tsukasa, and Nanako Kuroi, and another in which Kagami has a "suggestive" dream about Konata.

Koihime Musou OVA.

A collection of stories involving the girls of To Heart 2, with each episode focusing on a different character.