My Family Is Too Precious to Let Go

One day, I suddenly found myself inside the world of a novel. But of all people, the body I possessed belonged to a completely ordinary side character, hrown hair, brown eyes, no special traits to speak of. I planned to live quietly as an insignificant extra and fade into the background… So how, of all twists, did I end up marrying the female lead’s father? My plan was simple, maintain a reasonable married life, make the still-young female lead as happy as possible, and then divorce cleanly once everything was settled. But now… the daughter is far too adorable, and my husband is far too handsome for my own good. Just what is going to happen to my carefully planned divorce?!