A cheerful schoolgirl named Hikari has captured the hearts of everyone at her school. One day, she confides in the janitor about needing help with something, but instead he leads her to the gym where her popular teacher is waiting. It turns out that both the janitor and the teacher have been stalking Hikari. Despite being forced into having sex by her teacher, who was her first sexual experience, Hikari finds herself drawn to him. As their twisted relationship unfolds, they even involve the janitor... Note: Content may vary depending on the distribution method.