Kenji and his buddies often drink at their coworker Hiroshi's place after work. One day, after drinking too much, Kenji peeks into Hiroshi's sister, the unassuming Michiko's, bathroom and sees her incredibly erotic body with huge tits. Overcome with lust, he takes advantage of Hiroshi's absence and corners Michiko, who readily complies with everything he wants. They have sex relentlessly, revealing Michiko to be incredibly sensitive and erotic.
