After dying from an incurable illness, a young girl finds herself reincarnated as an orphan in the same world from a book she once read.

Coincidentally, she was adopted into the family of the story's supporting male lead – Oliver – the duke whose status was brought to ruin by his political enemies after being rejected by the heroine.

In order to ensure her life of luxury and an easy living, the little sister plans to make use of her previous life's memories to try and get her brother hooked up (with another girl)!

Disclaimer: I don't own the art used as the cover. All rights are reserved by the original artist.