Searching the Kitsu catalog…
ฤดูใบไม้ร่วง 2006 | 3 ตอน
It's the start of a new year for the Genshiken crew, and that means recruiting new members. Always a dreaded task, The Society for the Study of Modern Visual Culture manages to get Chika Ogiue pushed onto them from the Manga Club. With her introduction of "I'm Ogiue and I hate otaku," this year certainly will be anything but boring. (Source: ANN)
ฤดูหนาว 2016 | 2 ตอน
Bundled with the 21st volume of the Nisekoi manga.
ฤดูใบไม้ร่วง 2017 | 2 ตอน
Unaired episode 13 and 14 of Drifters released only on BluRay. They were not bundled with the volume 1-7 BD releases of the main show nor were they labeled as "volume 8" on the official website.
ฤดูใบไม้ผลิ 2015 | 2 ตอน
New episodes bundled with the limited edition eighth and ninth manga volumes. (Source: MAL)
ฤดูหนาว 2013 | 1 ตอน
OVA episode bundled with fifth volume of manga.
ฤดูหนาว 2020 | 10 ตอน
A stop-motion anime that will bundle with the 42nd compiled book volume of Haruichi Furudate's Haikyu!! manga. Anime will have 10 short episodes featuring the Karasuno team as puppets. (Source: ANN)
ฤดูร้อน 2013 | 1 ตอน
Animate Tokuten for purchasing all 6 volumes of TV Anime Series. The contents of the OVA are from the Drama CDs.
