No Korean text language..?

Slurp! Seven Knights Re:Birth officially supports Korean, so no worries, hehe. It'd be best to thoroughly check the settings menu again. With a benevolent heart, I offer this advice: have you perhaps checked the version information, hmm!

I'm using a Galaxy phone and my account is also a Korean account. Voice language is available in Korean, but text language is not. I've reinstalled it, but it's still the same.

Both your device and the Google account login method are set to Korean. I find that really strange and don't understand it, so I'm trying and looking for various solutions.