The Looking Glass is a Yume Nikki fangame by a user called "Bleet". It stars a girl names Irene as she explores the newly-opened world behind her mirror.
Like Me and Hell Diary, The Looking Glass features spoken dialogue and flavourtext when interacting with objects and characters. The game also features light adventure elements, such as simple puzzles and increased interactivity in the normal world. Irene is also capable of leaving her room, and begins the game in her classroom at her school.
The game is currently in version 0.04
You can find more general information about the game at its official blog