The After Rebirth: Mr. Blackstorm's Beautiful Wife
"Half a year later, my grandpa, who had been ill for a long time, finally passed away. Grandma and Mom were very sad. After taking care of the funeral, Mom told both Grandma about the divorce. The two elders of the Blackstorm family especially liked Mom as a daughter-in-law. They chose Willy Blackstorm for her back then. I can't blame the grandpa and grandma for this. In order to keep my mother, they got Willy Blackstorm drunk one night, so... there was a night between them, and everything is such a coincidence, just that one time, I was there!"