Kei Mizusawa

Mihama Academy on the surface, a closed learning environment established to nurture students who find themselves at odds with the world around them; in actuality, an orchard-cum-prison built to preserve fruit that has fallen too far from its tree. Whatever the circumstances behind its establishment, Mihama Academy is at present home to five female students, all with their own reasons for "enrollment." For better or worse, each girl has established a routine obliging of her current situation; life moves at an idle, yet accommodating pace within the walls of Mihama. Yet with the arrival of the institute's first male student, the nearly preposterously opaque Kazami Yuuji, the students at Mihama begin to fall out of step with their predetermined rhythms. Will Yuuji prove to be the element the girls around him needed to take hold of their lives once more, or will the weight of their pasts prove too steep a wall to overcome? And in the first place, just who is Kazami Yuuji? While the true nature of the "job" he is wont to alight to at the most haphazard of moments remains shrouded in secrecy, one thing is for certain his encroachment upon the quiet orchard known as Mihama Academy will prove itself momentous in one way or another. And of course, one cannot discount the possibility that perhaps Yuuji himself carries the weightiest past of any of the students...

The story is set at Shiomi Academy, a vast, prestigious academy with a Daitoshokan (literally, "great library") that rivals Japan's national library. As a member of the Library Club, Kyoutarou Kakei goes to Daitoshokan to enjoy reading by himself. He then meets a second-year girl named Tsugumi Shirasaki through the efforts of a so-called "shepherd" who fulfills people's wishes. Eventually, more girls join the club thanks to the "shepherd."

The story is set one autumn at the beginning of the 21st century in the Uchihama area. Uchihama Academy is growing by leaps and bounds. With the construction of a new school building, there will be one last General Club Festival at the old building that is slated to be closed. The students vow to go all out to make this final cultural festival a success. The Astronomy Club of the protagonist Sou Akiyama is filled with the big names on campus. Just before the festival on October 1, the club receives a request from the student executive committee to calm the uneasiness among the students. There are reports of ghost sightings, accidents, sleeping sickness, and other mysterious incidents at the old building. When Yui Furukawa, a quiet girl who transfered late into the school, appears before Sou, the gears of fate slowly begin to move.

The story centers around Takahiro Mizuno, a student training to be a begleiter (knight's assistant) at an academy where aspiring knights joust. He himself had come to this academy to train as a knight, after becoming the unrivaled junior champion in his own home country. However, an injury in a tournament's finals forced him to withdraw. Instead, he decides to be a begleiter to one of the academy's maiden knights and help her win.

In the near future, superpowered exoskeletons called Infinite Stratos (IS) can only be piloted by women, which has revolutionized society. Ichika Orimura, younger brother of a famous pilot, is the first male who can pilot an IS, so he is forced to attend an all-girls' school and train under the scrunity of the government and his older sister, a teacher at the academy.

When boys suddenly get into places where they've never been allowed before, some girls tend to get upset. So when the decision is made to merge the elite Yuihime Girls' Private Academy and the coeducational Kagamidai Private Academy, everyone wants to take extra care in avoiding trouble while bringing the two Privates together. Therefore, rather than just bringing the Kagamidai boys into the Yuihime girls' school all at once, a plan is concocted in which a group of test males will be inserted into the Girls' Private Academy first. Thus, poor young Shingo finds himself being thrown as a sacrificial lamb to the lionesses of Yuihime, who aren't exactly waiting for him with open arms. Will Shingo manage to survive the estrogen soaked death pit that is Yuihime? Can the girls learn to be more receptive to the boys? And just how long until something involving panties will cause emotions to flare, sparks to fly and the battle of the sexes to explode?