Okay, check it out. You have the power to track-slash-read anything you touch, right? But it's also a secret, so we can't call it esper or psych-- you know what I mean!

So how about we call it "Tracer"? [ GET IT? ] That way, I think of you when I use this gun-- which I guess I already do anyway since I wouldn't have it if it weren't for you, so... so it fits! Right?