Hello? Sayonara! | A Kny x modern reader

You have no idea where you are, listen you just spawned in like a Minecraft character you barely even remember what happened back home before you got there. You don't know it yet but your job is to guide Tanjiro to his goal. Helping him and his sister. Unfortunately you know nothing of your previous life...yet. All you know is that your from A different world and you know very little of the language.