There was only one girl in class—the kind you'd call a "loner," a frail, almost invisible beauty who seemed to lack luck in life. Her name was Rika, an unremarkable presence among her classmates. Yet, completely opposite to her plain looks and quiet demeanor, her body was irresistibly, provocatively attractive—her slender waist, her huge breasts clearly visible even under the school uniform, and her perfectly shaped, soft-feeling ass. Despite being just a student, she carried an enigmatic allure with a hint of mature sensuality. I continue to use her like my personal masturbation toy, treating her as my sex slave once again today.