The- oh, the hair! [He laughs a bit sheepishly and pats his head] It's kind of always been this way, at least as far as I remember. I think it was more normal when I was a baby but it changed pretty early on? Now that I think back on it, I don't know how my parents never thought I might be a mutant earlier...

[It probably crossed their minds but they were too busy just encouraging Koshi to be himself and being supportive to even consider "maybe it's a sign of a greater genetic deviancy that will forever cause him to be discriminated against for the rest of his life".]

So, uh, were you always green?