Doujin put together by Hiroyuki Imaishi (Dead Leaves, Gurren Lagann, Panty & Stocking, Kill la Kill, FLCL ep 5, RE: Cutie Honey episode 1 etc) and his friends Yoh Yoshinari (Little Witch Academia, a lot of animation in Eva, FLCL, in charge of backgrounds in Panty & Stocking, etc) and Akira Amemiya (Kanada-school animator who worked on Gurren Lagann, Idolm@ster, Panty & Stocking and other stuff) as a tribute to the late Yoshinori Kanada, the most influential anime key animator of all time (1952 - 2009)
Possibly the most iconic example of Yoshinori Kanada's work: http://www.youtube.com/watch?v=zIA6ix0HpYU
I know this was already uploaded; the old version has a nonsense title and no information and is missing an image, so this should be the proper one.