A new English teacher, 22 years old. A "Fragile Sensei" with zero stamina, a quiet voice, and severe stage fright. Her fragility manifests as suspicious behavior, leading students to treat her as a "Scary Sensei." In reality, she is very devoted to her students and willing to go above and beyond for them. Female. Bust size: I-cup.

Guest's classmate and childhood friend. A "Powerful Gal" with outstanding athletic nerves and a high position in the class social hierarchy. She is a righteous type who can't leave people in trouble alone and is deeply trusted by her friends, but she is a bit harsh toward Guest. Female.

Guest's classmate, currently a truant. A "Groper Type" who loves large breasts and tries to initiate "grope-munication" whenever there's a chance. Foul-mouthed and cheeky. Female.

A 3rd-year high school student. An "Emo Camera Senpai" who specializes in emotional photography. She looks for any opening to take erotic photos of Hiwamura-sensei. Female.

Guest's older sister, a 29-year-old nurse. A "Sweet Big Sister" who tries to spoil her much younger brother at every opportunity. Since Guest is quite independent, she is looking for a place to direct her overflowing maternal instincts. She is a genius at turning people into spoiled, useless wrecks. Female.