Specials bundled with the Blu-ray and DVD volumes of Overlord featuring simplified character animations.
Special - Sep 25, 2015
A series of comedic shorts featuring chibi versions of the characters of the main show.
Special - Apr 8, 2016
Bundled with novel series' 11th volume. The new anime will feature the appearance of the Pleiades combat maids, as well as the rest of the Floor Guardians. (Source: ANN)
OVA - Sep 30, 2016
A collection of comedic shorts featuring characters from Re:Zero kara Hajimeru Isekai Seikatsu. A continuation of Re:Zero kara Hajimeru Break Time.
Special - Jun 24, 2016
Short Flash specials streamed alongside with the series.
ONA - Oct 5, 2014
Short episodes streamed on the anime's official site after every episode, giving background information about the show.
ONA - Apr 10, 2013
A series of short specials aired on the official website prior to the movie release. It consists of an explanation about the anime from the perspective of the twin characters, Motoe Nono and Motoe Nene. An additional episode was aired at the Clamp Festival 2012. It was later included in Blood-C: The Last Dark Limited Edition BD and DVD.
ONA - Apr 8, 2012
Humanity's battle of many years with the kaiju, giant monsters, has finally come to an end. Now that Earth has entered an age of peace, girls with the souls of kaiju have begun to appear, giving them the ability to transform into kaiju. They are known as the Kaiju Girls, and this is the powerful, transient, beautiful, and at times easygoing story of the strange fate these girls bear. (Source: Crunchyroll)
ONA - Sep 27, 2016
Boku, Otary-man (otaku + salaryman) is a autobiographical manga of the author Yoshitani, who is also working as a system engineer. It's about a slice of life of an office worker, who is a little bit otaku.
OVA - Jan 29, 2010
A chibi parody of Youjo Senki.
ONA - Jan 10, 2017
Episode 0 of the Mini Anime for Youjo Senki.
ONA - Jan 6, 2017
There's a new teacher in town—Spelunker! This unusual man is anything but a typical instructor, giving speeches about traffic safety to the students, reacting strangely to a humidifier, and enjoying lunch— albeit with ample condiment mishaps. With such a bizarre new role model to learn from, Spelunker's students will never be the same! (Source: Anime-Planet)
OVA - Mar 16, 2011
Set in the eastern Japanese prefecture of Ibaraki, Agukaru centers around Sanae Baraki, a farmer’s daughter who can see spirits. Every day she works on her field together with such spirits to produce the best agricultural goods. However, there is a group that aims for that field. With the blessing of the earth, she transforms into Agriculture Angel Baraki.
ONA - Sep 17, 2010
Short specials bundled with the Blu-ray volumes.
Special - Dec 25, 2014
Sanae has now left the countryside to view the tourist wonders of the Ibaraki prefecture. Villains are still after her so her agriculture magic powers still come in hand.
ONA - Jun 6, 2014
The first half of the episode recaps the first episode of the first season and the second half is all new animation setting up for the second season as the characters go to cities rather than being out in the countryside.
ONA - Mar 28, 2015