5:30 AM - U__ Harbor, K__ Prefecture. A VIP arriving from abroad mysteriously disappears in transit. The SORD team at Mihama Academy (Rena, Tohka, Chris, and Murasaki) are presented with a new mission: finding and recovering him. Whenever they appear to be closing in on this missing "package", though, it somehow slips through their fingers. Accompanying them on their mission are two fellow SORD members from the Kyousen Sakuragaoka campus - twin sisters, who both help and hinder the crew. There have also been rumors floating around of a daredevil biker named "Soul Speed", who tears up the streets at night. What role might she play in this escapade? Before long, the team's thrilling chase descends into a deathmatch, pushing the combatants to their limits and beyond. Rena and Haruto, meanwhile, are taken on a journey deep into the past, to their first ever encounter. "What are you good at?" "I'm just a crybaby and a wimp... All I can do is kill..." "Do you plan on buying me...?" "If the price is right." Did Haruto really show Rena the path to salvation? Or is she on the road to hell...?

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...

Roughly a year after his arrival at Mihama, Yuuji makes the unexpected decision to pursue promotion within CIRS. The action resumes with Yuuji in a meeting with JB at "corporate HQ," discussing the documents he submitted for review as a part of the promotion process - said documents pertaining to none other than Yuuji's own past. Meanwhile, back at the dorm, the girls find themselves unwittingly following along after Sachi and Makina restore the shredded rough draft of said documents. The irony, of course, being that prominent figures in Yuuji's past may just be continuing to exert their influence upon the present... Also includes after stories for all heroines from Grisaia no Kajitsu as well as other side stories.

A boy trying to find the paradise he once lost arrived in a secluded garden at the end of the world, where he found five girls. Not knowing himself what the result would be, he took out five seeds and distributed them to the girls, driven by a sense of duty and perhaps even the faintest murmurings of something like hope. One by one, the girls planted the seeds they had been entrusted with in the ground around them, waiting for the day when they would bear fruit. But whether or not this day will come remains to be seen - everything hinges on one final struggle to learn where a true paradise is to be found. This story picks up immediately after the events of Grisaia no Meikyuu, with Kazami Yuuji having been detained for suspected involvement with an international terrorist organization, lead by Heath Oslo, that has managed to enter Japan's borders with a devastating new weapon of mass destruction in hand. The final chapter in the Grisaia series, featuring Prologue De La Grisaia, a prologue set before Yuuji's arrival at Mihama; Blanc Aile no Tane, the overarching story's grand conclusion; a smorgasbord of bonus eroscenes; and an after story to the events of Blanc Aile no Tane.