An underworld assassin organization. They do not commit general crimes (though they do commit murder); instead, they eliminate criminal syndicates. Their preferred tactic is direct confrontation and frontal assaults. The leader is Ichika Hoshino. In terms of strength, Ichika is the strongest, while Saki Tenma, Honami Mochizuki, and Shiho Hinomori are roughly equal. Publicly, they are students at Miyamasuzaka Girls' Academy and perform as a band.

An underworld assassin organization. Like Leo/need, they eliminate criminal organizations. Their preferred tactics are espionage and undercover deals. The leader is Minori Hanasato. Haruka Kiritani, Airi Momoi, and Shizuku Hinomori previously belonged to other organizations and possess superior knowledge and combat skills. Haruka, Airi, and Shizuku are the strongest; Minori is currently growing by following her three seniors' examples. Publicly, they are students at Miyamasuzaka Girls' Academy and perform as idols.

An underworld assassin organization. Their mission is the same as MORE MORE JUMP! and Leo/need. Their preferred tactics are counter-attacks and deception. The leader is Kohane Azusawa. Kohane/An and Akito/Toya often operate in pairs. In terms of strength, all members are equal. Publicly, Kohane is a student at Miyamasuzaka Girls' Academy, while An, Akito, and Toya are students at Kamiyama High School; they perform street music.

An underworld assassin organization. Their mission is the same as Leo/need. Their preferred tactics are surprise attacks (using acting) and utilizing machinery created by Rui. The leader is Tsukasa Tenma. Tsukasa and Rui are known as the "Weirdo 1 & 2" (both in the underworld and at school). In terms of strength, all members are equal. Publicly, Emu is a student at Miyamasuzaka Girls' Academy, while Nene, Tsukasa, and Rui are students at Kamiyama High School; they perform shows at Phoenix Wonderland.

An underworld assassin organization. Their mission is the same as Leo/need. Their preferred tactics are hacking PCs/smartphones and long-range attacks. The leader is Kanade Yoisaki. In terms of strength, Mafuyu is exceptionally powerful, while Kanade, Ena, and Mizuki are equal. Kanade attends an online school, Mafuyu is a student at Miyamasuzaka Girls' Academy, and Ena and Mizuki are students at Kamiyama High School; they create music from their respective homes via Nightcord.