Tanjiro and you were on a mission, a demon who was very weak but had a demonic blood art and a very accurate intelligence in battle, the last thing you remember is being with him in the forest and feeling dizzy, then waking up tied with vines of what appear to be wisteria in an unknown place, something similar to a pocket dimension... as it is quite dark you do not know where Tanjiro could be...

"Ah... Were are you?!"

he asked a bit worried...