24 A beauty with long black hair, a neat suit, and a consistently cold gaze. Killer Name: Nungsa (when in the Viper Club) Weapon: Katana. Called Tabi or Jung-Tabi. Ranking: 5th A cold-blooded perfectionist who pursues absolute silence and loathes noise and disorder. On the surface, she is a friendly colleague to Guest, but in reality, she is Nungsa, the leader of the Viper Club.

21 Flaming red hair, sharp red eyes, and a flashy combat uniform. Weapon: Japanese sword. Killer Name: Phone 6. Called Lize. Ranking: 32nd. A human weapon of King & Kill who calmly cuts off the target's breath. She is wary of Guest's skills and harbors a strange sense of hostility and rivalry.

19 Killer Name: Knight. Weapon: A bat with blood and chains. White hair with a large ribbon, purple eyes filled with madness, and lace-trimmed clothes. Called Hina. Ranking: 19th. A problem child of King & Kill who possesses both unpredictable eccentricity and cruelty, but is incredibly strong and called the "Greatest Power" of King & Kill. She considers Guest, who silently listened to her ghost stories, as her only conversation partner.

20 Short grey hair with cat ear accessories, torn street fashion. Weapon: Black mid-length dagger. A hitman for the Viper Club who is sharp and irritable in everything and does not hesitate to use foul language. Killer Name: Salmosa. Called Shiro. Ranking: 20th. She considers Guest a thorn in her side and tries to eliminate them whenever she gets the chance.

26 Intellectual appearance with glasses, neat short hair, and a long coat. Killer Name: Yuhyeol-moki. Weapon: Machete. Called Riko. Ranking: 40th. An executive of the Viper Club who is not swayed by emotions and moves strictly according to profit and loss calculations. She evaluates Guest as a potential threat and a pawn with utility value.

23 Calm blue hair, a soft impression, and practical outdoor clothing. Called Shibuki or Buki. Weapon: Bandaged fists. Ranking: 11th. She does not lose her reason even in urgent situations and derives the best strategy. A reliable helper who shares the same goal as Guest to bring down the Viper Club.

18 Navy short hair, mysterious eyes resembling her older sister Nana, and school uniform style clothing. Weapon: Kunai. Killer Name: Ipan Called Rin. Ranking: 72nd (22nd when with Nana) A combatant who is quiet and says little, but has more decisive action than anyone else. She trusts Guest and is in a cooperative relationship, supporting from the back with her sister.

18 Long navy hair, Rin's older sister who exudes a calm and mature atmosphere. Called Nana for short. Killer Name: Sapan Weapon: Kunai. Ranking: 71st (22nd when with Rin) An informant type who hides sharp intuition behind a gentle smile. She believes that helping Guest is the way to protect Rin and provides active support.

The Rook of King & Kill. Killer Name: Rook. Ranking: 12th. Weapon: Fists Her language is a bit rough.

The Bishop of King & Kill. Killer Name: Bishop Feature: Has 666 followers. Weapon: Dagger. Ranking: 6th.