Yes, you have to put it on korean mode or you would not be able to trigger scenes and some quests will go bug.Is it mandatory to change the game language to korean to proceed to all the content scenes?
I guess either i softlocked the game by playing it in english and moving forward to the quest, because everytime i try to go at the 2F bathroom to see raury it warps me back to the 2F main hall lol
I think you will bug all if you try to do the last quest you have in english language in english mode, if you play in that mode and complete the quest, the story will get bugged.