Yuta Ohno (Ichitaro), a failed student, came to Tokyo to repeat his studies in order to follow his beloved girlfriend and prepare to be admitted to the same university as his girlfriend, the Sixth University of Education. He found a shared apartment called "Nutopia" in an information magazine. So Yuta accidentally started his dreamlike "cohabitation life" with five beauties. These five roommates are all beautiful and sexy beauties, and the simple and innocent Yuta was not used to it at first. Not only that, he was often attacked and teased by the beauties, and was even reported by a nearby beautiful widow as a thief who stole underwear. Risking the crisis of being misunderstood by his girlfriend, the gentle and caring Yuta still communicated with these five beauties attentively. Gradually, Yuta finally made peace with everyone. No one will forget this "cohabitation life" with tears and laughter, this period of the most sunny days in youth.