Chaos Project anime

Comic Party: Revolution

TV / 13 eps / Spring 2005 / Visual novel

A man-made island sits on the edge of Tokyo, well off the beaten path. The time is drawing near when this island of cold concrete will be set afire with passion. People will gather to draw manga, search for manga, and get passionate about manga! It's a joyous celebration of individuals who've staked their entire youths on doujinshi. It's Comic Party! Kazuki and Mizuki are college students immersing themselves in the otaku subculture. Kazuki has grown more confident in his abilities as a doujinshi (amateur comic) artist, but will all the girls distract him or help him succeed? And what of Taishi's plans for world domination? (Source: ADV Films)

Happy☆Lesson

OVA / 5 eps / Summer 2001 / Visual novel

One guy. Five girls. One roof. It's a recycled idea, but it never gets old. Happy Lesson is a kinetic take on an old genre. Chitose shares his house with five ladies. One might think the continued attention of this many girls would be a good thing, but too much attention can prove to be painful. Did I mention they're also instructors at his school (hence the title)? Not only is he the subject of their abuse at home, but at school as well. Even when things finally calm down at night, all the rooms are taken so Chitose must sleep on the couch. (Source: AniDB)

Jungle De Ikou!

OVA / 3 eps / Spring 1997 / Original

After meeting a dancing old man in what she thinks is just a crazy dream, a preteen schoolgirl embarks on a series of fanservice-filled magical girl adventures with a little creature named Ongo who might be evil and a shy girl with mysterious powers named Nami. (Source: ANN)

Shrine of the Morning Mist

TV / 26 eps / Summer 2002 / Manga

Since childhood, Tadahiro Amatsu has two different-colored eyes - one brown and one light hazel. But because of a dark secret behind his left eye, he's become a target for the masked sorcerer Ayatara Miramune and his band of demons. To combat the demons appearing all over town, Yuzu Hieda, a priestess in training, recruits four other girls from her high school. Under the supervision of Yuzu's elder sister Kurako, the five young priestesses must undergo months of training to master their abilities. (Source: ANN)

To Heart 2 OVA

OVA / 3 eps / Winter 2007 / Visual novel

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

ToHeart 2 AD

OVA / 2 eps / Spring 2008 / Visual novel

Based on the Visual Novel ToHeart 2 AD (Another Days), the sequel to ToHeart 2.

To Heart 2 AD Plus

OVA / 2 eps / Spring 2009 / Visual novel

Volume 1 Silfa the robot maid is currently working at Takaaki's house. However, she seems to have a little trouble with her duties as part of it involves going out in public to buy groceries, and she's a bit "shy" in a sense. But when it comes to Haruka Yuzuhara's special curry, she'll do what she has to in order to make this special dish for Takaaki. And that includes some competition from Milfa (Harumi). Volume 2 Involves summer, swimsuits and photography. (Source: AniDB)

To Heart 2 Adnext

OVA / 2 eps / Fall 2010 / Visual novel

Komaki Manaka daydreams about classmate Kono Takaaki but is too shy to talk to boys. As Takaaki-kun helps her in the library they resolve to have training sessions there, calling each other by first name. When Manaka addresses Takaaki-kun outside the library, his buddy Kosaka Yuji overhears them and tells their classmates how close these two have become, causing a surprising effect on other girls around Takaaki. (Source: ANN)

To Heart 2: Dungeon Travelers

OVA / 2 eps / Winter 2012 / Game

According to Amazon Japan, a two-volume OVA series "ToHeart 2 Dungeon Travelers" was announced. "ToHeart 2 Dungeon Travelers" is an RPG game on PlayStaion Portable released in 2011.

Comic Party Revolution OVA

OVA / 4 eps / Fall 2003 / Visual novel

A college student, Sendō Kazuki, happened to set foot in the doujinshi community. There, people are producing and selling doujinshi, which is the comic book drawn by fans rather than professional writers. At first he was reluctant, but as he met the girls earnest about producing doujinshi, he was gradually involved in creating it himself. This series is based on a Dreamcast/PC game, "Comic Party", and its setting is different from the TV series. The main characters, Kazuki, Taishi, and Mizuki are college students whereas they were high school students in the TV series. The story starts after Kazuki has become acquainted with other characters. (Original description from AnimeNfo)