0556, 0557, 0558
The Mirror Room was a room only accessible by chance. If you attempted to reenter the dream balcony from Urotsuki's room, there was a 1/5 chance, decided at the beginning of a dream, that you would find yourself in here instead. It was removed from the game in version 0.113.
The mirror room, as it's name implies, is a left to right reflection of Urotsuki's Room, though there are differences between the two. The differences reside in that the mirror room has a chair in the middle of the rug with pillows scattered about and everything is the room is either turned off or closed. You are only able to interact with either the chair  or the television, and all effects are disabled in the room. Interacting with the television causes the screen to turn into static fuzz as you are taken to the twin mountain beach area on a one-way basis; this may take multiple attempts to see the effect.
The twin mountain beach area features you being at the beach beside an old swing set to your right and a small sand castle in the bottom left corner. In the distance across the water, towers the twin mountains on the right side. While on the left, lay the sun on the horizon drifting deeper below. As a whole, the area has an old slide show film reel visual quality to it with flickering light and grime flashing on and off the screen. You are able to take a seat on either swing. You can also equip the Child or Fairy effects and interact with the sand castle, taking you to a one-way trip to the nexus staircase area, which simply descends downwards and eventually exits this area to Old Train Station B.
- On return visits to the area, after you have found the twin mountain beach area, sitting on the chair will teleport the player to the Sofa Room.
Urotsuki's Dream Room → Mirror Room