Revive...: Sosei

Revive... Sosei is a follow-up to Dōkoku Soshite..., featuring a similar story premise and gameplay. The protagonist of the game, a high-school student, finds himself and other characters (mostly female high-school students) trapped in a marine research facility. Exploring the abandoned building, the hero discovers the research staff died under mysterious circumstances. Was this a murder committed by a human being, or some sort of an unknown evil force? The hero does not have much time to think...