Mihama Academy is a prison-like school built to preserve fruit that has fallen too far from its tree. It is home to five female students who each have their reasons for enrolling in the academy and live their life idly within the walls of Mihama.

One day, Kazami Yuuji the institute’s first male student arrives and throws the orderly rhythm of Mihama off balance. Is Yuuji what the girls need to hold of their lives once more, or will the weight of their pasts prove too steep a wall to overcome? Or is his past even heavier than any of the others?

[Source: Crunchyroll]

Shorts included with the Blu-ray/DVD volumes.

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...

[Source: VNDB]

The 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. Meanwhile, at Mihama Academy, the remaining students find themselves with time running out. Due to financial issues, the school is set to close within the month. Over the past year, though, the girls of Mihama have finally begun to find their own legs, thanks to Yuuji's involvement. Are they really just going to bury their heads in the sand and let the world change around them? And are they really willing to let the man who changed their lives slip away without so much as trying to win him back? As the end of their time at Mihama Academy approaches, Amane, Makina, Sachi, Yumiko, and Michiru find themselves arriving at a single conclusion.

How much a group of students can do in the face of countries and organizations far bigger than any individual could hope to be remains to be seen. In the first place, Yuuji's position is far more complicated than any of them could have imagined, as he finds himself embroiled in an elaborate game of super-political chess revolving around both himself and an inconceivable new system slumbering in the depths of CIRS—a system that Yuuji may have more of a connection to than he thinks. One thing is for certain, though—the girls of Mihama are no longer willing to let the world steal things away from them without at least a bit of resistance first. And with help from a mysterious individual known only as Thanatos, they may just achieve their goal...

[Source: VNDB; emended]

Special bundled with the Blu-ray/DVD volume of Grisaia no Meikyuu.

Short specials included in the Blu-ray/DVD releases.

Following the Heath Oslo incident, the existence of the US-Japanese anti-terror organization CIRS has become a matter of public knowledge. CIRS has been rebuilt from the ground up, and its most covert functions spun off to a new agency: SORD (Social Ops, Research & Development).

The goal of SORD is to train a new generation of operatives to defend the country against future threats. To that end, the organization has established a series of schools up and down the country. Mihama Academy, more-or-less left to rot after its abrupt closure, has been given new purpose as one such 'specialist training school'.

This new incarnation of Mihama Academy is home to a diverse group of students, who every day work to polish their unusual skills - sometimes on the job. Mihama now entrusts the misfit girls who attend it with guns and live ammunition. Paying their own safety no heed, these students are again and again plunged into dangerous extrajudicial missions - all for the good of the realm.

"We've been granted a place in the world.

That alone isn't enough - there wouldn't be any meaning in living, if that was all we had...

It's not enough just to get by on the backs of others. I live by my own strength, and I fight to survive.

Because only the survivors among us belong with the living..."

No matter how much life grinds them down, what future awaits these girls, who've themselves chosen the path of the gun?

[Source: game description]

What was once "Mihama Academy," a sanctuary for young girls, has now been transformed into a SORD (Special Organization for Research & Development) training school dedicated to fostering talent for national defense. Rena and Maki specialize in firearms, Tohka and Gumi excel at sniping, Chris handles explosives and data processing, and Murasaki is a skilled ninja for intelligence operations. Together, they take on cases too complex for the police or Self-Defense Forces, repeatedly facing dangerous missions. This is the story of these young girls, painted in blood and gunpowder.

[Source: Crunchyroll]