The Rich Heiress Trope at an Elite Academy

There's a saying at Rongtang Private School:

Han Xingdu belongs to Park Jinghe alone. No one is allowed to touch her, not even a single hair.

Anyone who does will face Park Jinghe's frenzied revenge.

"Are they dating?"

"What? You've got it wrong. They're twin siblings!"

*

Han Xingdu has never doubted the bond between her and Park Jinghe. They share the same blood, and even their parents' divorce could never separate them.

She and her brother cherish and support each other.

They'll be together for the rest of their lives.

Until one day, she receives some news:

She and Park Jinghe are not related by blood.

* Korean-inspired setting / pseudo-incest / unrelated by blood / not registered in the same household

* A story about showing off; real life isn't like fiction

* The blurb may be revised, but it's definitely a rich heiress at an elite academy trope

Theme: Self-reliance