DISCLAIMER

Lalisa Manoban, a famous heiress from the 21th century was
diagnosticated with cancer and died five months later.

Or she didn't?

When she wakes up, she's the good-for-nothing daughter of a general
in the 17th century; who has the same body as her, but not the same
skills.
When a contest between noble girls takes her to a palace full of rivaliry
and conspirations she will have to deal with an annoying stepsister,
some savage friends, and a certain prince who doesn't seem to leave her alone.