I Transmigrated Into a Book and Became the Protagonist's Lazy Little Sister

In a Period Novel, the Female Lead Is Incredibly Lazy

The female lead is lazy and loves to eat in a story set in a bygone era, but she’s also a genius who invents all sorts of things.

A Period Novel Where the Heroine Transmigrates Into the Original Heroine's Younger Sister

Looking for Healing Stories Set in a Bygone Era. Either the Male or Female Lead Can Be Healed, but I Want a Sweet Romance

Looking for books like "I Took a Warehouse to the 1970s and Picked Up a Madman as My Husband". Anything similar to that one.

Any Book Transmigration Stories Where the Protagonist Becomes the Male or Female Lead's Sister?

Any novels where someone transmigrates into a book as the sister of the male or female lead? Ideally, she transmigrates as the villainess's younger sister or a supporting character's younger sister in an ancient-era sweet romance or a strong female lead story with secret identities! My standards aren't high: just make it good and funny!

Recommendations for Self-Serving Quick Transmigration Period Pieces

Something like "A Self-Serving Woman's Rise to the Top in a Period Novel": the heroine doesn't have memories from previous quick transmigration worlds, her personality differs in every world, and the male lead is hopelessly lovesick.