Shadicus

Laser is hard light too.... Usually people just used it for stabbing... But if you made it flat and not atabby... You can step on it...and lessen the heat aswell...

In Japanese names, family/inherited names are spelled out in Kanji, while personal names are spelled out in either hiragana or katakana. Typically, the family name is spelled out with 2 kanji, but there have been exceptions. And it's rare when I see personal names spelled out using any katakana; it's usually hiragana, but exceptions happen.

So using the first two Kanji, there is a chance someone might read her family name and accidentally say "Hikuhashi" instead of "Mitsuhashi". Because the kanji for Light (光) is often read as "Hikari". Not saying this is bad thing, just a possible story idea. Misunderstandings about family name pronunciation happen quite often in Japan.  It's a hazard of having a symbol that can be read in more ways than one.

As for "Kin", I realize it is unisex and can mostly used by anyone, but Kin is more popular as a masculine name. (Look up the slang term Kintama to understand why.) I am trying my best to come up with an alternative suggestion, but if you insist on keeping Kin, I doubt anyone would hold it against you. May I ask why you chose Gold?

I guess I was confused because I don’t think of lasers as solid. Like if you drove a car into a laser, it would be cut, not crumple from impact.

That’s actually exactly what I was planning. She’s going to start off with the ability to make these solid light platforms and walls, but they’re blindingly hot and dangerous to touch. Controlling the heat and brightness are goals for her to work towards, so she can eventually stand on them without having her shoes melt.