He was a father-in-law who lost his mother-in-law who had committed suicide to cancer. It was reflected in the ideal couple for iroha. But it was due to bondage. In order to replace iroha with his wife, his father married his son's wife with a rope and started training as a dog. The husband who bathes without knowing anything of the irritation inserted in the nectar pot. The husband died in an accidental accident, and the iroha received further training in the mourning. Nobody can stop two people anymore...