Thread: Searching for one manga

Hi, long time ago i ve read one manga and i cant remember its name and also i somohow couldnt find it, so this is my last chance to find it, if anyone know the name.

This manga is about extraordinary girl, who has special ability, she is strong and flexible (she can jump from 3rd floor and be fine). And she is trying to hide it and act like normal girl.
Then there is guy who want to marry her because she is perfect for him. Im not sure if he was a prince, but he definitely was someone important and wealthy, maybe a head of some kind of company.

Any ideas?