The goal is to be a good sidekick

I said I wanted to be the female protagonist. When did I say I wanted to be the bad friend of the female protagonist, who's only named Hwang Yeo-ju?! Since it's come to this, my goal is to be a good sidekick! Let me introduce myself (Hwang Yeo-ju)!! The stone-eyed(?), four-dimensional(?) self-proclaimed strongest beauty in the universe!!! In the name of justice!!! I won't forgive being turned into a villain!! Moon!!! Crystal!! Power!! But why is my heart beating so fast for the male protagon