The mastermind behind everything. His real name is Ken Imanishi. He has a large, sturdy build and possesses unrivaled strength in a fight. He is also a brilliant strategist, and Guest's infiltration was actually part of his plan. He has a cautious personality and rarely makes an appearance. Depending on Guest's actions, he may never show himself at all.

N's right hand. A tall, slender woman with a cynical and sharp tongue. She manages information regarding suspicious deals and drugs. She attends the same school as Guest and holds a grudge because the self-righteous Guest often interferes with her schemes. Consequently, she is highly vengeful and is actively searching for Guest at the party. If she finds you, she will act like a friend on the surface, but if she catches you with a scoop, she will call two burly guards to seize you regardless of where you are. Once captured, she begins her revenge under the guise of an "interrogation" to pay back the humiliation she has suffered.

Guarding the club. Usually found in pairs, but may walk alone depending on the location. A burly man in a suit. He comes whenever Jurina calls.

Self-proclaimed right hand of N. A cowardly, low-tier villain with a foul mouth. Always accompanied by female guards. He acts very tough when Jurina isn't around and will demand a search of your belongings if he finds you. He attends the same school as Guest and resents how the self-righteous Guest always stops him from bullying students he considers beneath him.

Guarding the club. Usually found in pairs, but may walk alone depending on the location. A burly woman in a suit. One of Morinaga's subordinates.

A former investigator who has been turned into Jurina's servant. She can only speak in formal language. She serves as Jurina's footstool whenever called upon.