Toriningen is a name given to certain characters in Yume Nikki. They have a long pointed snout for a nose that some consider to be beak-like, hence their name, meaning "bird person". Normal Toriningen will not harm Madotsuki, but those with purple eyes and what appears to be a tongue or blood coming out of their mouth teleport her to an enclosed area with no escape. (Except Medamaude and waking up.) Stabbing a normal toriningen makes her go into this "odd" state.
The Toriningen and Uboa are the only characters considered "enemies" in the game, since they both teleport Madotsuki to a closed-off area.
One particular odd Toriningen behind a desk will change your menu color randomly.
There are three variations, (Pig tail, cut-off pigtail and straight hair), with its respective demented state.
The player character in Nasu has a similar snout.
Toriningen can be portrayed as tengu imagery present in Yume Nikki.