On his way to Areishia Spirit Academy, Kamito Kazehaya runs into a naked Claire Rouge, a student who had been bathing as part of a purification ceremony. She had been preparing to form a contract with a powerful spirit in order to acquire more power as an elementalist. Her efforts are wasted, however, when Kamito ends up with the spirit despite the fact that only shrine maidens can become elementalists. Yet to be discouraged, Claire then announces that Kamito must become her contracted spirit instead! After reaching the school grounds, Kamito escapes from Claire and meets Headmaster Greyworth Ciel Mais, who invites him to enroll at the academy. Although his life at Areishia will be far from easy as the only male student among the shrine princesses-in-training, he begrudgingly accepts in exchange for information about his former contracted spirit, Restia Ashdoll. Adding on to that, he also must fulfill Greyworth's main request: to win in the Blade Dance, a battle festival occurring in two months, where he will face the strongest elementalist rumored to be contracted with a darkness spirit.

Sugisaki Ken, through diligence and academic excellence, had successfully entered the paradise that is the Hekiyou Private Academy's Student Council. There, he boldly embarks on his plan to create his personal harem with the 4 girls who are the other council members, namely: The incredibly youthful president Sakurano Kurimu; The cool and kindly yet super-sadistic secretary Akaba Chizuru; Tomboyish and hot-blooded vice-president Shiina Minatsu; and The ephemerally beautiful yet complicated treasurer Shiina Mafuyu. While every day since then has been non-stop fun, Graduation Day now looms near. Could this spell the end of their carefree days? (Source: translated and adapted from official site by Cranston)

Sakuta Azusagawa's little sister, Kaede, is wrapping up middle school and needs to make an important decision. The school counselor believes it is in Kaede's best interest to attend an online high school, given her history of being a shut-in and her crippling phobia of traditional classrooms. However, Kaede wishes to enroll in Minegahara High School, just like her brother, as she desperately hopes for a typical high school experience. She pleads with Sakuta; his girlfriend, Mai Sakurajima; and Mai's half-sister, Nodoka Toyohama, to help her study for the entrance exam—and they enthusiastically agree. But her envisioned high school life does not unfold as planned. With her unresolved trauma coming to a head, Kaede grapples with the conflict of determining what sort of future path she truly wants to embark upon.

Ousai Academy was originally an all-girls high school. Due to the declining birth rates in recent years, it was converted into a co-ed school. The first year male students would find themselves surrounded by girls and unfortunately, Tsuda Takatoshi is one of them. What's worse, he gets scolded on his first day by the student council president Shino Amakusa, which did not give a good first impression of him. Tsuda also meets the other student council members while getting scolded, and in the end, he gets late for class. As an apology for ruining his morning, Shino lets him join the student council for various of reasons and he accepts it, or rather, he's forced to accept. Thus begins his days as Tsuda soon realizes that he's the only normal student in Ousai Academy...