Trump!

Jiyoung was told about Trumps, and the Rule to control Trumps, by her maternal grandfather.
On her way to her new school, she encounters a super model fighting another guy, using a special power, which seems to be the one Jiyoung’s grandfather had been talking about.
Unfortunately, she gets involuntarily involved in the fight, and even meets them at her new school. She gets to know they are psychics, called Trumps (or Cards) who have special talents, and mingling with them, she realizes she also has a special power.
Is she also a Trump, or even the Rule?