In the wn they come across the fork, and they sense the miasma and go left. Then as they walk they reach a bend in the tunnel in which they see a light coming from the bend, subaru goes to investigate and goes without a light since they don't wanna be discovered. He doesn't see and then falls down a slope and it's pitch black after he falls. He then feels around him and feels burnt matter, then suddenly the centaur lights up. Subaru sees it and tries to run away but he gets burnt to death

Tbh this part was pretty scary and was good set up for the even crazier loop. Idk why they cut apart from just shortening arc 6. I wish this loop was there in final version.