“I want to know… the truth behind this intuition.” The protagonist, a teacher, is suddenly confessed to by one of his female students one evening. Her name is Shiozuki Manami—the student council president, a top-performing student, and a beautiful girl. Though he initially rejects her confession, a chance encounter leads to a kiss, and the two begin a secret relationship. “We won’t cross the final line until after graduation.” They make this promise for the sake of their futures, but ironically, it’s this very restriction that awakens a lewd desire within Manami. As her desires grow, what conclusion will she reach…? A M-themed ADV where a talented and beautiful girl gradually transforms into a seductive dominatrix!