Seishirō Tsugumi

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Seishirō Tsugumi (鶫 誠士郎, Tsugumi Seishirō) is a hitman who was raised and trained by Claude Ringheart of the Bee Hive Gang. Tsugumi is originally introduced as a male student who transfers to Chitoge Kirisaki's class and has orders to protect her from Raku Ichijō, whom he thinks forced Chitoge into having a relationship with him. Tsugumi, although considered a side character in both the manga and anime, has several chapters and episodes dedicated to the development of her relationship with Raku Ichijō.

Raku Ichijō

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Raku Ichijō (一条 楽, Ichijō Raku) is the Female protagonist of the Nisekoi series that is written and illustrated by Naoshi Komi. She serves as the fake Girlfriend of Chitoge Kirisaki for the next three years of his life to prevent a war between the Bee Hive Gang and the Shūei Clan before they eventually get married.

Paula McCoy

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Paula McCoy (ポーラ・マッコイ Pōra Makkoi) is a former colleague of Seishirō Tsugumi during her time as an operative for the Bee Hive Gang at the United States. Initially introducing herself as a self-proclaimed rival of Seishirō, she later enrolled in the same school as Seishirō and became part of a class alongside Suzu Ayakaji (aka Fuu) and Haru Onodera. Paula goes by the alias "White Fang" during her service as a hit woman for the Bee Hive faction but has claimed to be called other numerous names.