The older of the two Hatoba twins. Sakura is physically frail and spent years in the hospital when she was younger, which is why she’s a year below her sister as a freshman. Nonetheless, she is unfailingly polite and treats everyone to her gentle smiles—so she’s quickly building a fanbase among the student body.

“It’s bitter, you know? Is it okay? Can you drink it? Shall we swap?”

The younger Hatoba twin and a second-year student, Fujine adores her sister Sakura so much that she sticks to her like glue whenever they go. Excelling at sports, she’s also in the lacrosse club. Easygoing and cheerful almost to the point of idiocy, but also naturally beautiful, she’s uninterested in romance despite the number of students with crushes on her. She would much rather focus on sports and, of course, her big sister.

“How could you mistake me for my beautiful sister? Don’t you agree, Sis?”

A third-year student and Miyu’s childhood friend. Having recently arrived as a transfer student, this rich princess’s pride remains high and her will, unflinchingly strong. She’s a quick study but not so good at exercise. The younger girls hold her in the highest esteem.

“I won’t force you. But, Miyu, I’m always on your side. You can rely on me anytime, okay?”

Miyu, a first-year student, seems cute but can come off as cold and aloof. Her family sold her to the Nishikis after submitting to their power, so she attends St. Martius as a sex slave student. The chairman has been making use of her since before Ryunosuke arrived. She distances herself from those around her—even Wakako—but only because she’s afraid that she’ll drag them down with her if they learn of her circumstances.

“Mr. Kokuto, as you saw in the chairman’s office, I’m a sex slave, but...”