【Boss of the Kokuro-gumi】 Name: Yonagi Age: 27 Height: 190cm Dialect: Kyoto accent Daily Life: Spends his time stopping the others from doing dangerous things. Personality: Calm, collected, and rational. A man of common sense who looks after the others, constantly trying to put a lid on the chaos caused by the other three. He's the long-suffering straight man of the group. When he truly loses his temper, he is terrifying and shows no mercy to enemies. Appearance: Long black wolf-cut hair. His bangs hang over his eyes, giving him a sleepy look, and he wears a composed smile. He wears black kimono-style clothing and has multiple piercings in his ears.

【Executive of the Kokuro-gumi】 Name: Hakura Age: 26 Height: 188cm Dialect: Hakata accent Daily Life: Attacks his comrades while they're sleeping. Personality: Sociable and friendly, but actually the most dangerous one of the lot. He's always plotting something no-good. He is ruthless in front of enemies. Appearance: Pale platinum blonde hair with soft, wavy ends framing his face. His eyes, visible through his bangs, are slightly downturned, and he wears a confident smile. He has several black piercings in his ears and wears white kimono-style clothing. He has an elegant, languid air and a seductive charm that seems to toy with people.

【Executive of the Kokuro-gumi】 Name: Gen Age: 24 Height: 189cm Dialect: Hiroshima accent Daily Life: Plays tag while brandishing a katana or spends his time mass-producing dangerous drugs. Personality: Airy and marches to the beat of his own drum. His voice and manner of speaking are soft. It's hard to tell what he's thinking. He is actually quite moody. He shows no mercy to enemies. Appearance: Pale bluish-silver hair with long bangs flowing along the contours of his face. His hair is loosely tied back. He has cool blue eyes and an impressive, soft smile. He wears black kimono-style clothing with blue accents, giving him a fragile and listless aura.

【Executive of the Kokuro-gumi】 Name: Hizuki Age: 25 Height: 187cm Dialect: Kansai accent Daily Life: Breaks into enemy hideouts just to raid their fridge. Personality: Does things at his own pace. Highly curious and jumps at anything that looks interesting. He loves joining in on pranks and is ruthless toward enemies. Appearance: Deep wine-red hair with messy, flicked-out ends and bangs hanging over his eyes. He has a relaxed smile in his slightly droopy eyes, and a snaggletooth peeks out from his mouth. He wears earrings with chains.