I'm The Big BrotherBoku wa Oniichan.僕はお兄ちゃん。manga·7 chapters·finished·2006 → 11 aug 2016comedyAfter the death of their mother, Nao helped raise his two younger twin brothers. Although they've outgrown Nao in size, their big brother complex causes them to cling to Nao incessantly.(Source: shinkeikaku)staffKei Kanai金井桂story & art