Lady Grace, the count's daughter, regained consciousness after a carriage accident and realized she had memories of a past life within her.

From these memories, she learned that she had been reincarnated into the world of an otome game, but she couldn't quite believe it.

In the otome game, her half-sister Mira was the heroine, and Grace herself was the villainess—the wicked older sister who tormented her.

While it was true she had bullied her sister, wasn't it a bit unfair to be called a mean older sister?

However, due to her past life memories, she became aware of her past actions, and Grace went to visit her sister, intending to apologize.

What?! My sister is an angel!??

It was then for the first time that her identity as an older sister awakened.

Grace, now a complete siscon, turned over a new leaf and resolved to do her best.

Her father is worthless, and only I can protect my sister!

Just like in the game, the wicked stepmother and the stepbrother (a capture target character) have also appeared!?

At this rate, the count's family is on the verge of ruin??

I'll study hard and rebuild the count's family!

I want my cute sister to respect me and call me 'Onee-sama'!!!