Probably one of my favorite mangas right now. It's so realistic it hurts. The art is extremely expressive and really detailed, while the characters are surprisingly fleshed out. The protagonist is extremely relatable, and he really feels like a real person.
Seriously, I don't do this often, but I'm giving this a 10/10. If you're still on the fence, just do yourself a favor and read it.
Edit: While the story is still realistic and the characters remain painfully real, the author really has to step up his game; the plot's going on this really weird tangent about social climbing. Hopefully the focus will shift back to the protagonist's power and the underlying conspiracy behind the drug that gave him said powers soon.