Another so-called "bad skill" that anyone with a bit of imagination (or knowledge in physics) could turn into massive weapon ? I'm starting to get feelings of déjà-vu...
That aside, I like the art, and it feels better than the other revenge-themed mangas. She doesn't look like she'll become a bloody edgy psycho thinking that everyone is an enemy. This kind of 0 to 100 always felt like an exaggeration.