Right before the exam, an honor student boy tries to focus on studying in a cram school's self-study room. However, he can't concentrate on his studies and eventually can't resist giving in to masturbation. Although he's thinking "I should focus on studying" in his head, his uncontrollable desire wins out. He eventually reaches a climax. At that moment, he tries to endure so as not to be noticed by those around him, but in the end, he can't stop. The tension and anxiety of the situation, combined with the feeling of release, intertwine and heighten his emotions all at once.