We will edit a saved file and replece the current language to the English or Korean!
Now, Step 1:
Download PKHeX (Gen 6 SAV/PKX Editor): https://googledrive.com/host/0B4J_osX-tKAISW9xMmdtVGF4R2s/PKHeX05166d.zip
Now, Step 2:
Extract PKHeX (Gen 6 SAV/PKX Editor).
Open PKHeX (Gen 6 SAV/PKX Editor)
File>Open>Folder Citra>User>sdmc>Nintendo 3DS>0000000000>0000000000>title>00040000>0011c400 (or 0011c500)>data>00000001>
Change filter file into all file* >>>> choose main and open
Click Trainer Info
Replace to KOR(recommended) or GER Save!
File>Export SAV….>>Export main..>>> Choose main and save