I am kinda new and kinda old to the bts fandom. And I read a few fanfics on aff and archieveofourown. Now there are two ways they write Jungkook/Jeongguk. My question is why? His full name is Jeon Jungkook or not? Or is it just another way his name is translated?
And the thing is...here on aff there is almost no one who calls him Jeongguk.

It is confusing. Is it?