He's not real but some image says that Ao Oni is in Japan.
The cast of Real oni gokko 5 - 2012 includes: Eiichi Furui Lisa Nakama Suzu Natsume Nagisa Ohshima
One place that Oni appears in Ao Oni is in the library.
A few 1st tier games based on Ao Oni are Abe Oni, Aka Oni,Akame Oni, and Ao Oni Plus.
The cast of Real oni gokko 3 - 2012 includes: Tatsuya Kishida Naoyuki Morita Shoko Nakahara Masahiro Toda Junki Tozuka Kasumi Yamaya Kento Yamazaki
The cast of Real oni gokko 4 - 2012 includes: Takuya Ishida Leona Kameda Nozomi Maeda Honoka Miki Itsuki Sagara Anna Tachibana Ogawa Takeru
It is thought that the Oni is inside the mansion because he was a former resident of Ao Oni.
The Oni in Ao Oni is a creature with light purple skin and large black eyes.
When an Oni starts following you in the game Ao Oni, the only place to hide is in a closet.
The main protagonist of Ao Oni is named the same as Ao Oni.
Oni stands for Japanese monster.
No: Oni Chichi - 2 eps Oni Chichi 2 - 2 eps Oni Chichi: Re-birth - 1 ep Oni Chichi: Re-born - ???