I'm Kimiaki, 29 years old, working as a sales representative at a car dealership. My wife, Yui, is 27 and a full-time homemaker. We've been married for four years and don't have children yet. My father, Kozo, is 53 and works as a medium-haul truck driver. Since my father began living separately at the end of last year, we started cohabiting about four months ago. Our family dynamics have shifted, marking the beginning of a new chapter in our lives.