View Message

I think they sound no more or less like brothers than any other pair of names, but I don't really know anything about Japanese names.
But I would say that theme-naming is risky, in real life and in fiction. And in real life, anyway, naming a child after personality traits he ends up having is not believable. He wouldn't show himself as frosty or ever-changing till a long time after he was born.

---

Also, if I were you I'd research and find out if your surname here is an actual surname in Japan and if Japanese people would give names with those meanings along with the surname.
I am assuming you are giving the surname first, which is correct in Japan but is likely to confuse others.
If not, know that Japanese people do not typically use middle names.

---

Before you criticize a man, walk a mile in his shoes. That way, when you criticize him, you're a mile away and you have his shoes!
Steve Martin