At first you think the story is about the family, but really it just follows the sister as she bumbles her way through random events. Everyone else in the story is very one-note, while MC herself is just a handful of tropes cobbled together (explicitly so in-universe) into one. 30 chapters in and we have basically the same jokes and story beats being repeated across different scenarios. If the comments accompanying the chapters are to be believed, the Light Novel itself sees no real progression for literally hundreds of chapters, with more of the same that we've seen up until this point- though presumably witha few more characters thrown in.

One brother's a lolicon that keeps getting cockblocked in spite of his new body/life, the mother wants her kids to get married, dad's into sewing, and sister wants to avoid marriage like The Plague. Does this sound funny? Laugh. It's basically all you're getting.