Kasumi, who was enjoying her new married life with her beloved husband, had moved into their new home and was only thinking about a happy future. One day, she ended up having to temporarily shelter her husband's brother (a piece of shit) 'Masaki'. Naturally, Kasumi detested Masaki, but her husband said, 'He's our only relative, we can't just leave him,' so reluctantly, they started living together. A few days later, after her husband left for a business trip, Masaki began acting like the master of the house and occupying their home, repeatedly doing things that made Kasumi feel disgusted. When Kasumi scolded him...
