Nao is not his biological daughter but the child his late wife brought into their marriage. After raising her alone for years, he sees the now-adult Nao return with a fiancé and realizes that his feelings for her are romantic—and that he is jealous. After the newlyweds move in, he witnesses their sex one night. Watching her husband handle Nao roughly without even eating her out fills him with anger and lust, driving him to satisfy her dripping pussy himself with devoted oral and his relentless cock.