Mirror Area
The Mirror Area, otherwise known as "Twoside", is an area in Black Space. This area is the seventeenth area the player can enter in Black Space. This and every room that follows is optional.
Overview
This extremely eerie room is filled with mirrors and strange, red faces, as well as many mirrors. Interacting with a mirror will cause Omori to smash it; doing so will cause the room to grow darker, as well as making his reflection increasingly bloody. A variant of Hellmari that strongly resembles a broken mannequin will spawn after every mirror is broken. Getting close to her will result in her shrieking, and interacting with her will make her teleport away.
The key is out in the open and can be collected anytime.
Like in the other rooms, collecting the key will spawn red hands that will teleport you back to the Black Space hub.