Non-chan, a student at a national university, helps a shy virgin struggling with premature ejaculation by training him at her place. Despite her clumsy handjob skills, he cums instantly every time—his cock far too sensitive. To improve his stamina, they use masturbators and dry-humping in her panties as practice, gradually progressing to real penetration. Full of unexpected moments, the tension builds until Non-chan, touched by his gentleness, softly allows him to creampie her—a truly erotic turn of events!