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 area looks similar to Red Space. In it are many mirrors and red skulls that are floating. Interacting with the mirrors will cause them to break, leaving a pile of shard behind.
The more mirrors Omori breaks, the more bloodier his reflection will look like, until, after the very last mirror was broken, Hellmari will spawn.
Attempting to touch her will cause her to make a sound and warping 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.