In the Sengoku period, reborn as an ancestor of his family's main branch, destroyed by the Go-Hojo clan. Can he change history? In order to make his clan prosper, he cheats, and the result is that he becomes the son-in-law of the enemy Hojo family. Currently, he has returned from Kyoto, and his number of wives has increased. To the descendants of the warlords, nobles, and priests who appear in this story, I apologize. A lot of the protagonist's skills are based on the author's own experiences. While I may use old characters that are not used in modern Japanese, they are characters from that time period, so they are not misspellings.