Please see this previous content report.

I saw that report. But every other site uses the korean names.

@AustriaZero94 said:

I saw that report. But every other site uses the korean names.

And the original broadcast in Japan uses Japanese names. There are at least different 3 versions of the anime:

1. The version that airs in Japan: Japanese audio with Japanese names
2. The version that airs in Korea: Korean audio with Korean names
3. The version that airs on Crunchyroll: Japanese audio with Korean names

Since the original version is the version that airs in Japan, the Japanese names should be used since those are also the names used on the official Japanese website.