Sara, my wife, refuses to do any housework—cooking, laundry, cleaning—it's all left to me. Even in the bath, she makes me wash her body, and before bed, she demands I give her a massage. She's dumped every single chore on me, and over time, my resentment has steadily grown. Then one day, Sara's twin sister, Saki, suddenly shows up. When I vented my frustrations to her, she responded with an unexpected proposition.