On the surface, Mihama Academy is a closed learning environment established to nurture students who find themselves at odds with the world around them; in reality, it is a prison built to preserve fruit that has fallen too far from its tree.
Whatever the circumstances behind its establishment, it is at present home to five female students, all with their own disturbing reasons for "enrolment": Makina Irisu, Sachi Komine, Michiru Matsushima, Yumiko Sakaki, and Amane Suou. 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 Yuuji Kazami, the students at Mihama begin to fall out of step with their predetermined rhythms. Yuuji may prove to be the element the girls around him needed to take hold of their lives once more, but the weight of their pasts might be too steep a wall to overcome.
The greatest mystery, however, is just who he is in the first place. 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, perhaps Yuuji himself carries the weightiest past of any of the students.