|Aida Ririko英田 莉々子|
|Hair||Brown, Shoulder-length, Twin Tails|
|Clothes||Dress, School Uniform|
|Personality||Energetic, Friendly, Kind, Outgoing, Talkative|
|Visual novels||Main character - Night Demon -Yume Oni-|
Mashiro's friend. She's very worried about Mashiro's condition, and been going over Mashiro's house to visit and persuade Mashiro to go to school.