In the Sengoku period, the protagonist is reborn as an ancestor of his clan's main family, which was destroyed by the Late Hojo. Can he change history? In order to prosper his clan, the result of his cheating leads to him becoming a son-in-law of the enemy Hojo family. Currently, he has returned from Kyoto, and his wife has increased. The skills of this protagonist are largely based on the author's own experiences. Sometimes, old characters that are not the current kanji are used, but they are not misspellings as they are the kanji of the time.