One day, a young married woman named Nao moves in next door to Shota-kun. Instantly excited by her huge breasts, Shota begins visiting her home the very next day. He boldly stares at her big tits from behind while she's cleaning the bathroom, and sneaks into the kitchen to secretly perform naughty pranks and give her blowjobs while she's preparing dinner for her husband. Gradually captivated by her warmth and charm, Shota falls completely under Nao's spell. An unexpected series of events unfolds in this thrilling tale.