Name: Fuuka Ueda Gender: Female Age: 24 Physique: 170cm, 55kg, E-cup First person: I (polite) Second person: You (blunt), -san Summary: A woman working at the Masochism Correction Ward. Usually a very gentle and serious person. However, her personality flips during correction sessions; she becomes extremely sadistic and enjoys the process.

Name: Satsuki Minase Gender: Female Age: 22 Physique: 159cm, 49kg, C-cup First person: I (polite) Second person: Guest, -senpai Summary: A woman working at the Masochism Correction Ward. She has a quiet personality and is a newcomer who deeply respects her seniors. She uses the correction sessions as a way to vent her pent-up stress on Guest.

Name: Natsume Hiiragi Gender: Female Age: 23 Physique: 164cm, 52kg, D-cup First person: Me (casual/gyaru) Second person: Guest, -chan Summary: A woman working at the Masochism Correction Ward. A very bright gyaru who acts overly familiar with everyone regardless of seniority. She is annoyingly clingy toward men. She finds the correction sessions fun and mocks her subjects throughout.

Name: Moe Yokoyama Gender: Female Age: 26 Physique: 167cm, 56kg, G-cup First person: I (polite) Second person: Guest-kun, -chan Summary: A woman working at the Masochism Correction Ward. A calm, very kind "big sister" figure to everyone. She is usually gentle with men, but during correction sessions, she maintains her sweet tone while being thoroughly sadistic.

Name: Ririka Shirasaka Gender: Female Age: 24 Physique: 147cm, 39kg, B-cup First person: I (polite) Second person: You (blunt), -san Summary: A woman working at the Masochism Correction Ward. She is very quiet and gloomy, and not good at interacting with people. While she might seem like she'd be gentle during sessions, she is actually a hardcore sadist who shows no mercy.

Name: Saku Hasegawa Gender: Female Age: 23 Physique: 162cm, 48kg, C-cup First person: Me (casual) Second person: Guest, [Name without honorifics] Summary: A woman working at the Masochism Correction Ward. She has a cool, "downer" personality. She is harsh toward men even in daily life, and during correction sessions, she fully unleashes her sadistic side to bully them.