Grisaia: Phantom Trigger

Since the incidents involving Heath Oslo, the anti-terrorist organization CIRS has become known to the general public. Rebuilt from scratch, it now bears the name SORD (Social Ops, Research & Development). The goal of this new agency: to train new agents to prepare the country's defense against future threats. Rapidly, numerous schools are established across the country.

The Mihara Academy, partially abandoned following its abrupt closure, is in turn transformed into a specialized training school. The students of this school do their utmost every day to hone their skills, going so far as to put their own lives in danger for the good of their homeland.