Oh right. Different worlds. I'll try my best to keep the amount of weird terminology as low as possible. In short, an Esper is anyone who has gone through the Power Curriculum Program and attained a Personal Reality. This Personal Reality is what allows an Esper to use superpowers. There's a lot more to it than that, but I doubt you want a lesson on the Uncertainty Principle and Schrödinger's Cat.

[Touma has a feeling that Grif isn't the type of person who would enjoy talking about quantum physics. Not that he can blame him.]

Hell no. I'm not here to entertain you. And even if I wanted to, I can't show you anything. I'm a Level 0 Esper. I don't have any Esper abilities to show off with.