Mother and son rape, Hikari GVH-894

Hikari is a mother of a son struggling with his college entrance exams. One day, she is approached by her son's homeroom teacher who uses the promise of altering his grades as bait, and she inadvertently gives herself to him. However, witnessing this, her son erupts in jealousy and malice, shouting, "I'm never taking an exam again!" and abandons his studies. Realizing her son secretly harbors feelings for her, Hikari decides to transform into a crazed mother to cheer him up! She sets a condition for him: "If you don't take the exam, I won't let you ejaculate," and uses teasing tactics to push him to the brink. However, what was originally intended as a feigned crazed behavior gradually makes Hikari realize her true feelings for her son…