Beyond the Boundary

After defeating the stinky Youmu, Ai becomes completely captivated by idols. After gathering Akito, Mirai, Mizuki, and Hiroomi, Ai makes a surprising proposal: I want to become an idol!

Ninomiya Shizuku comes to the Nase household crying to Izumi, saying, "My boyfriend dumped me." After getting drunk, Shizuku becomes very irritating, and Izumi makes a suggestion that takes the conversation in an unexpected direction... Will Shizuku find happiness...?

As is often the case in these shorts, Mirai finds herself short on money again.

Hiroomi talks about his memories of the Nase family. Hiroomi as a child worked hard to become a respectable Ikaishi. His younger sister, Mizuki, adores her older brother, and his older sister, Izumi, is strict but kind to her younger siblings. What was Akito's first reaction after hearing this heartwarming story from Hiroomi?

This episode takes place two years prior to the anime series and begins when Hiroomi receives a request for a job from his older sister Izumi: to subdue the invulnerable half-yōmu Akihito. Hiroomi's younger sister, Mitsuki, encounters a dark silhouette in the street on her way to follow Akihito and her brother.

Izumi is called to stand trial, but the girls are too terrified of her to sentence her with anything and proclaim her innocent. She responds that she must have been brought there under false charges and steps forward to punish them, smiling. The camera cuts away as the girls let out a collective scream.

Akihito is standing in the courtroom when his mother Yayoi appears and begins to embarrass him. It's revealed that she is on trial for being annoying. She is sentenced to switch bodies with Akihito, however she begins to embarrass him further while in his body.

Hiroomi appears in the courtroom and proudly flaunts his nude body under the guise of training to overcome his cold hypersensitivity, much to the distress of the girls. Enraged, Mitsuki uses various means to attack Hiroomi who only seems to revel in the former's anger. After Hiroomi openly admits his perversion, Ai finds him guilty and sentences him to have his hands stuck under Akihito's armpits for three days. However Akihito finds it much of a punishment for himself rather than for Hiroomi.

Shizuku somehow finds herself on trial for her teenage behavior. However Mitsuki, Mirai and Sakura remain initially hesitant in sentencing Shizuku out of pity for her failure to grow up. After Ai teases Shizuku's teenage-looking hairstyle the girls then present their evidence depicting Shizuku taking teenage compliments seriously and also struggling to maintain an unnaturally perfect posture despite her age. Finding her guilty, Ai sentences Shizuku to cosplay as a sixteen-year-old high school girl.

Akihito somehow finds himself in a courtroom as a defendant being tried for his glasses fetish by super deformed idol versions of accusers Mitsuki, Mirai and Sakura along with Judge Ai. As Akihito refuses to admit any wrongdoing, the girls present evidence depicting him staring into a glasses store for hours, taking pictures of Mirai's glasses and buying pictures of girls wearing glasses from Ayaka. Finding him guilty, Ai sentences Akihito to witness the destruction of Mirai's glasses.