Kosaki Onodera is a classmate of Raku Ichijo. She is a potential key holder to the lock of Raku's first love.
Kosaki Onodera is a main character in the Nisekoi Flase Love series that was created by Naoshi Komi. The series first began as a one-shot in Shueisha's seasonal magazine Jump NEXT!, then it was serialized in Shueisha's Weekly Shōnen Jump on in November 7, 2011.
Her first appearance was in Nisekoi Volume 1 CH. 1 "Promise".