Himesaki-kun usually dresses like a boy, acts like one, and is completely oblivious to sex. She doesn't mind bathing, changing, or even being peeked at in the toilet by her male childhood friend; to her, it's just normal. One day, while watching erotic videos together, she remains unfazed even when her excited friend starts masturbating. Having never known pleasure, Himesaki-kun is taught how to masturbate as a girl, experiencing that "feels good" sensation for the first time and climaxing while trying to hold back her voice. Once awakened to her sexuality, she gradually starts wearing cute lingerie, showing more skin, and becoming more feminine. Driven by a newfound greed for sex, she studies and becomes increasingly erotic. Before anyone knows it, she transforms into a super lewd girl who begs for cock insertion with loud, messy moans, absolutely loving sex.
