College student Aya (Kumiko Hayama) agrees to babysit her neighbor Shota for two days. At first glance, Shota appears to be an ordinary college student, but in reality, he's a complete brat with a perverted streak. He's obsessed with breasts and quickly becomes fixated on Aya's large tits. Taking advantage of her kind and nurturing nature, he begins performing increasingly lewd pranks on her. His actions escalate rapidly, leading to something far beyond what she expected. And the final outcome…!? [Note: Some minor visual and audio distortions may occur]