Because I Don't Like My Big Brother At-All--!! — Season 1, Episode 9: Summer! Festivals! Brother and Sister's M:i:V

Episode synopsis

Shūsuke goes to a Matsuri festival with Nao and Iroha, who compete with each other to try and seduce him. Meanwhile, the A.G.E Explorers go on a quest to find a legendary pornographic treasure and proceed to drag Shūsuke away to join them. However, the treasure they find contains zoophillic porn that proves too intense for them and they run away, with Shūsuke picking up Nao in tow. After watching the fireworks with Nao, Shūsuke goes to deliver some BL books to Mayuka, who once again becomes enthralled by his nipples.

About Because I Don't Like My Big Brother At-All--!!

Nao Takanashi loves her brother Shūsuke despite the incest taboo. Nao thinks that Shūsuke is her blood relative, but in fact she is an adopted daughter, whose parents have died. After Nao learns the fact, she wants to fall in love normally with Shūsuke because siblings by adoption can marry under the family law in Japan. However, she finds herself competing with Shūsuke's childhood friend, Iroha Tsuchiura, and his class president and yaoi lover, Mayuka Kondō.

More episodes from Season 1

• E1Wicked Usual Day of a Brother And Sister
• E2Twintail, Attacking Brother and Sister
• E3A Rival Appears! Brother and Sister in Huge Trouble!
• E4If My Little Sister Wore a Swimsuit
• E5Mister X Strikes Brother!
• E6My Brother has Dreams of Black Panty Stockings
• E7My Brother and His Friends' Akiba
• E8Aim for Brother's Top!
• E10Brother Saves the World
• E11Calling Out to Brother from the Center of the World
• E12I Don't Like My Big Brother at All!!