A granddaughter who sympathized with her grandchildren, and a father who couldn't do anything to see how she did it, went out into the middle of large numbers. Mitsuki-koma
"Yes, my grandpa bang," he said. ... instead of his deceased mother, he looked after his grandfather for a few years. But my grandfather was good to know that the old-fashioned chuckle was ignorant, and he even ordered a sex processor. One day his father finds out, he greedyly orders that he handle his sexual desire.