Dimension Store, Why Are All My Customers Villains?

Why did the evil god Loki join the cause of superheroes? Why did Sasuke help an old lady cross the street on the streets of Konoha? The omnipotent Xia He actually sold the organization in one night; what caused such a big change in the villains' personalities? It all starts when they enter a store... Sorry, our store only accepts villains. Please get out of the way, protagonists and so on. It's time for the villains to shine! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.