"It's very minor unless you buy items from Lumi to enhance it. It isn't going to spread. It's very useful for keeping drinks cool."

Midorima has thought about it, really, but he's not sure that he wants to spend the time working to control more major magic than he already does. Between this and having his "aura" activated by Weiss to protect him from minor harm, it's already a lot of focusing involved. It's a distraction to deal with on top of trying to remain educated, moonlacing, all the nonsense that goes on around here, and of course, basketball.

"I doubt you could hurt yourself."

He says doubt, because Takao can find new ways to do everything somehow. But for the most part, he hasn't heard about anyone ruining their lives with their own abilities.