Maiyuki decided to live with her parents-in-law due to her husband's transfer. Her stepfather was old and had a terrifying libido and would cuddle her stepmom every night. A pant voice that can be heard night after night. The passionate and beast-like copulation where her flesh collides with her Maiyuki's crotch aches. Her husband is indifferent in contrast to her father-in-law. Maiyuki's desire to have sex every night because of her strong libido gradually shifts to her unfaithful father-in-law. Maiyuki, whose desire to be embraced by her father-in-law swelled, seduced her father-in-law on her dangerous day.