Husband and father-in-law, the three of us lived happily together... until that day. Tsukasa's negligent behavior at home, which saw her as a 'woman' in the eyes of her father-in-law, had reached his limit. And when that limit was reached, Tsukasa was forcibly violated. The sense of transgression against her husband and the unreal experience of being violated by her father-in-law, Tsukasa secretly felt excitement and before she knew it...
