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. (Source: Frontwing)

Spin-off manga based on the game by Front Wing, told from Sakaki Yumiko's point of view.

Urashima, an island far from the mainland. The people who live there lead carefree lives. But five years ago, the island's three great families suffered a series of misfortunes, and succumbed to suspicion. The people of the island cut off all contact with the mainland, and began a slow decline. The key to saving the island lies in three girls who belong to the three families. But they are bound by old traditions, and are conflicted. On that island, a lone man washes ashore. The man claims to be from the future, and he begins a solitary struggle to change the island's fate. (Source: Anime News Network)

A manga based on the mobile game Grisaia Chronos Rebellion.

Hoshiuta is set in the fictional town Mihoshi ( lit."beautiful star") in Shizuoka Prefecture, Japan. The town is in a quiet, rural area on the west of the Izu Peninsula and borders the Suruga Bay. There is a high school named Mihoshi Academy in the town. The protagonist Kazuhiko Suoh and his friends are students of the school. (Source: Wikipedia)