Corpse Party: Blood Covered, Vol. 5 by Makoto Kedouin
The end is nigh!Behind the truth of Sachiko's death lies a cruel and tragic past...The students of Class 2-9 struggle to hold on to their sanity as they fight both the ghosts of the school and the ever-encroaching Darkness that seeks to turn them against their friends. If they can't solve this mystery soon, it'll be too late!When living is this hellish, what good is death...?