Little devil and "the prince"

Kati is known as the little devil at her school, she's infamous for the number of fights she gets into and wins, she's feared in the school, but those who dare to cross her don't think much of it since Kati has a small frame. She's always been stubborn and hardheaded and takes bull from no one. She never backs down from a fight. But there's another infamous person at that school, The "prince" he's quiet charming and calm, girls fall for him left and right, he is almost perfect, Kati and Lio never have crossed paths even though they are both almost school legends, hell Kati didn't even know of Lio's existence until she was a second year when they bumped into each other, what will happen?