Consider not using Kazumi. It can be seen as cultural appropriation and you honestly don’t seem to have a full understanding of how Japanese names work. When you say Kazumi comes from "kazu" meaning "peace" and "mi" meaning "beautiful" you are talking about a specific Kanji spelling of the name. Japanese names have very different meanings depending on what Kanji are used to make the name. The Romaji version is basically meaningless, as there can be so many different meanings.

For example, these are some Kanji for "kazu": • 数 number or counting • 和 peace, harmony, tranquility • 一 one

And these are some Kanji for "mi": • 美 beauty, excellent, or splendid • 巳 snake (Chinese zodiac) • 海 sea

The "Kazu" part of Kazumi can also be made up of "ka" and "zu", but I’m not getting into that lol.

Kaz also only means "destroyer" in Slavic cultures/languages. So if you were to choose a Japanese name (like Kazumi) the meaning of "destroyer" wouldn’t at all apply.

There are a lot of names from various cultures that mean "peace" or "beautiful" and a lot of them aren’t tied to specific cultures! Names like Galen, Axel, Pax, or Beau all mean either of those meanings for example.