Five years after marrying his childhood friend Kanon, his father-in-law passed away and he began living with his stepmother, Touko. He had buried his admiration for Touko, who was also his first love, deep in his heart, but as they started living together he felt his feelings for her resurrected. One day, Touko approached him, telling him that she had offered him a job as an underwear model. Of course, my wife was strongly against it, but Touko, who was not ready to give up, waited until the next day when my wife was out and asked me to take a photo of her in her underwear...