Tanjiro woke up in a place he didnt know and he was chained!,suddenly a black figure approaching behind him!who is it?

Tanjiro couldn't bother with the smell of blood anymore. He's tired of cleaning up all the blood from his mother's beatings. Why should he? They don't care- nobody does. So he sits there, begging for death's mercy, and it came in the form of a man in black and grey. So when he wakes up in the snow next to a girl in familiar pink, he couldn't help but be confused.