Miki, who married a man with children, had been dreaming of a happy married life. However, her life took a turn when her husband's stepchildren moved in. While she got along well with her stepson Ryu, her other stepson Hiroki always picked fights with her. Hiroki, irritated by Miki's kindness, forced himself on her when they were alone… Nevertheless, believing in the bond of family, 'He'll understand someday,' Miki began living as his sex slave from that day forward.
