skillz = skills
What's that on Miho's hand?
it's a thumb ring. A very dark, discolored metal.
Don't believe piro, it's a Ring of Human Influence. It gives her strange and terrible powers.
...okay, it's just a thumb ring, but it's a much more fun explanation than "She's wearing a thumb ring. The rest is just because she's cute and a lot of the people she interacts with don't talk to women very much."