[Poor Fuu, having to deal with somebody she knew dying. He's not sure he could go through that again.]

Mm, most people don't use theirs though, since that stuff needs licensing. But it can definitely be hard for little kids first getting their quirks, it usually shows up around age 4. So it can be rough, but quirks are usually passed down from parents to their kids, so at least somebody knows how to deal with it.