Youmuin-the Nightmaretaker -akuma Ni Tsukareta ... [upd]

: A recurring "Stalker" enemy appears after you collect the Tarnished Scalpel . Do not fight it; hide in lockers or well-lit rooms until the heartbeat sound fades. Ending Requirements

The Akuma shrieked, a sound that tore at the fabric of the dream. Youmuin began to inhale—literally drawing the black smoke of the demon into his own lungs. This was the burden of the (The Possessed): he didn't just destroy the evil; he became its cage. Youmuin-The Nightmaretaker -Akuma ni Tsukareta ...