If you're non-asian, and go by a japanese, chinese, or any other culturally influenced name, you are appropriating that culture. That isn't even a debate. The only people exempt from this are fictives or alters who are japanese/chinese/etc in headspace and have a japanese/chinese/etc name, but their body is white. If you're white and go by Kokichi, stop. You're being racist. Their culture isn't your aesthetic.
No Jessica your name isn't Shuichi its Jessica shut the fuck up