TV special for . After a slow but eventful summer vacation, Shuchiin Academy's second term is now starting in full force. As August transitions into September, Miyuki Shirogane's birthday looms ever closer, leaving Kaguya Shinomiya in a serious predicament as to how to celebrate it. Furthermore, the tenure of the school's 67th student council is coming to an end. Due to the council members being in different classes, the only time Kaguya and Miyuki have to be together will soon disappear, putting all of their cunning plans at risk. A long and difficult election that will decide the fate of the new student council awaits, as multiple challengers fight for the coveted title of president.

The anime follows the daily life of PuniRunes—mysterious creatures who love to be coddled—and Yuka, a fourth-grade girl who loves soft, squishy things.

Atsuko "Akko-chan" Kagami (known variously as "Stilly," "Caroline," or "Julie" in Western versions of the anime) is an energetic elementary school girl who has an affinity for mirrors. One day, her favorite mirror which was given to Akko by her mother (or in some versions, by her father, as a present from India) is broken, and she prefers to bury it in her yard rather than throw it to the trash can. In her dreams, she is contacted by a spirit (or in some cases the Queen of the Mirror Kingdom) who is moved that the little girl would treat the mirror so respectfully and not simply throw it away. Akko-chan is then given the gift of a magical mirror and taught an enchantment that will allow her to transform into anything she wishes.

Seiran Island is a tropical eden where wanton sex acts are encouraged under local "pervert law." But even in this paradise, some prefer to remain celibate. There's the lesbian younger sister who would secretly bone her brother... The classmate everyone has labeled as a wild slut... The tiny upperclasswoman, so petite that guys think she's off limits... The shy girl who's a bit self-conscious about baring some skin... And here I am, a guy with a "huge" complex about his "little guy." Despite this, we form the anti-copulation front: No Love, No Sex! As its founder and head honcho, I, Junnosuke Tachibana, will not stop until we have abolished this ridiculous sex law for good! I've even stumbled upon a generous soul in this mysterious, wealthy gentleman whose name remains a mystery... He's already set us up with a secret hideout and a tonne of money. In exchange, he asks us to find someone and "protect her at all costs." So, she has the key to our mission's success...? In this case, there's only one thing to do: find the mystery girl. And all while keeping the SHO off our trail,... Oh, and we also have to keep our virginity intact. Make no mistake! Just wait and see! I'll repeal that perverse law!