I Don't Like You at All, Big Brother!! is a Japanese seinen manga series written and illustrated by Kouichi Kusano which was serialized on Futabasha's Web Comic High! service from August 2008 to September 2016. It has been licensed in North America by Seven Seas Entertainment. It has been adapted by Zexcs into an anime series which aired in Japan between January 9, 2011 and March 27, 2011. An additional original video animation episode has also been released.