Seishiro Tsugumi is a hit-woman trained by Claude and sent to Chitoge's school to protect her.
Seishiro Tsugumi is a supporting character in the Nisekoi False 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 False Love Volume 2 CH. 15 "Rival".