Hikari, a private tutor renowned for her exceptional teaching skills and stunning looks, boasts a 100% success rate and enjoys immense trust from her students. This time, she takes on a new assignment: a hopeless student who's failed college entrance exams twice. Instead of focusing on his studies, he spends every day masturbating, completely lacking motivation. To reignite his drive, Hikari uses her full charm, delivering erotic lessons designed to shake his mindset. Through this intense mix of tension and temptation, the student's heart gradually begins to change.