Kamichu! OVA

Four OVA episodes bundled with the 22nd, 23rd, 24th, and 25th volumes of the manga. The OAD project will adapt the "past arc," which spans from mid-volume 14 to volume 17 in the manga.

Two OVA episodes bundled with the 16th volume of the manga. One of the included episodes will be based on the story from the 15th volume, while the other will contain an all-new original story. (Source: Anime News Network)

The first OVA titled Sore wa, ikinari otozureta=koi was released on March 29, 2019. The second OVA titled Tomodachi no Kyori was released on February 26, 2021. The third OVA titled Shain Ryokou to Negaigoto was released on October 14, 2021. Note: Unaired episodes bundled with the special edition of the 7th, 10th and 11th manga volumes.

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.

"Tsuki ni Naku" will take the story content from volume 11 of the manga, which features a visit to an onsen by the members of the Hiizumi Life Councelling Office, while the town's police force have to deal with a new youkai-hunter threat. This OVA is bundled with the limited edition of the manga (14th, 15th, and 16th).

Based on Barasui's manga series, Ichigo Mashimaro follows the life of Nobue Itou, her younger sister Chika, and her friends. The basic premise of the show can be summed up in "cute girls do cute things in cute ways", be it trying to quit smoking, going outside to play, celebrating a holiday, or doing school work. This OVA picks up where the series left off, continuing the adventures of your everyday life, only cuter. (Source: AniDB)

Special episode of Yuyushiki.

OVAs of Seitokai Yakuindomo* which were either bundled with the limited editions of the manga volumes or as standalone OVAs.