After a bet gone wrong, high school troublemaker Nino Omose faces a daunting task: persuade the artistic loner in his class to spend the night with him within three days. In a bold move to get close to Natsume, he volunteers as her nude subject. But Natsume remains focused on sketching him, oblivious to his advances. As the deadline looms, Nino grapples with the moral implications of his actions, questioning if his pursuit of amusement is worth exploiting Natsume's vulnerability.