The latest AwesomeTTS release adds support for the latest TTS voices from Naver, with high quality Korean and Japanese voices.
For patreon fans, obtain your API key here: https://cloud-language-tools-prod.anki.study/request_patreon_key , then go to the AwesomeTTS Configuration screen, Advanced tab, and enter the key under AwesomeTTS Plus. Click Verify, then OK. You can then make use of the voices under Naver Clova Premium.