Abarenbo Mama S01 E01 Why the hell do I have to be his mother!?

Kawano Ayu (Ueto Aya) had just married stylist Kawano Tetsu (Oizumi Yo), twelve years her senior. With Tetsu's new shop just opening, they were ready begin a new, happy life, when one day, Tetsu's son from his previous marriage shows up.