I was a popular guy in school, but after entering society, my close friends one by one got married and drifted away, leaving me as an unremarkable bachelor. One day, I found a hot woman collapsed on the side of the road, so I ended up taking care of her. That woman was Nao, a classmate who confessed to me ten years ago and my childhood friend. The plain appearance of the past was gone, she had evolved into a beautiful, big-breasted, and seductive married woman. That night, after learning about her husband's infidelity, Chiyo left home with nowhere to go and came to my place...
