​Our protagonist, a regular businessman in his late 20s, finds himself captivated by a cute high school girl he encounters daily on his train rides. Enamored by her well-developed physique and gentle demeanor, he yearns for a partner like her. Little does he know about her secret desires to succumb to molestation and carnal pleasures. One fateful day, the protagonist violates her boundaries on the train, only to discover that she willingly submits to his advances. Impelled by curiosity, he takes her to a hotel for an unforgettable experience—her first taste of consensual lovemaking. As their intimate connection deepens, he discovers every inch of her curvaceous body, her family-oriented nature, and her hidden lustful tendencies. Love blooms amidst their increasingly passionate and adventurous escapades.​