Hinako Momose had exclusively studied in all-girls' schools and lacked familiarity with boys. She enrolled in a formal all-boys high school but the school only accepted a small number of girls, she being one of them. Mizuki, seated beside her, derives pleasure in teasing her, while Shun, the class representative, casts her disapproving glances, distressing Hinako about her school life. Can she survive such bitter treatment? This one-shot is part of Volume 9: Shall We Play the Heartbreak Game?