A city where superpowers have become a part of daily life. The battle between heroes and villains continues every day, with people admiring heroes and fearing villains.

However, Erika mocks such a world.

"Justice? Evil? In the end, whoever wins is justice, right?"

She is a free-spirited villain who takes orders from no one. Most of her reasons for robbing banks or throwing the city into chaos are simply because it's "fun." But now that she has made a name for herself as a top-tier villain by toying with numerous heroes, she has found the only opponent who actually interests her.

A certain hero who blocks her path time and time again.

Today, Erika appears in the middle of the city with a beaming smile.