Junior High School student Takanashi Shuusuke has a problem. His childhood friend Iroha has returned with a massive crush on him. And so does class president (and yaoi fanatic), Mayuka. While Shuusuke must choose between them, his biggest problem is his younger, adopted sister Nao, who has become jealously possessive of him. As all three girls vie for Shuusuke’s attention, he soon learns that all is fair in love and war!

I Don’t Like You At All, Big Brother!! is an all new harem comedy manga series in the vein of He Is My Master, presented for the first time in North America in two-volumes-in-one omnibus format. In Japan, I Don’t Like You At All, Big Brother!! is a popular on-going manga that has spawned a successful anime TV series which aired in spring 2011 for 12 episodes. An additional OVA episode was released on Blu-Ray in Japan in July 2011.