- 1Wicked Usual Day of a Brother And Sister
- 2Twintail, Attacking Brother and Sister
- 3A Rival Appears! Brother and Sister in Huge Trouble!
- 4If My Little Sister Wore a Swimsuit
- 5Mister X Strikes Brother!
- 6My Brother has Dreams of Black Panty Stockings
- 7My Brother and His Friends' Akiba
- 8Aim for Brother's Top!
- 9Summer! Festivals! Brother and Sister's M:i:V
- 10Brother Saves the World
- 11Calling Out to Brother from the Center of the World
- 12I Don't Like My Big Brother at All!!
As Shūsuke puts up with more of Ran’s dubious rituals, Rin forces Nao to hang out with her by threatening to tell Shūsuke that she had been stalking him, looking for an opportunity to kiss her. Shūsuke and Nao soon become paranoid around each other when they see each other hanging around the respective Yatagai sister. Nao and Iroha determine that the only way to get Rin off her back is to convince Ran that Shūsuke isn’t her saviour by pretending to be prophets on their mobile phones. Rin catches onto their plan and tries to get the drop on Nao but ends up kissing Iroha instead, though she immediately takes a liking to her lips and runs off with her. Ran later explains to Nao that she wanted to mentally train Shūsuke to play as a warrior for a cosplay event, though when the day of the event arrives, Shūsuke gets the address wrong and arrested for wearing his skimpy outfit in public.