Fall into the Infinity castle.

Akaza douma and koku.

"AH-" you screamed as the solid ground underneath you folded inward and you started falling through what looked like an infinite loop of stairs rooms and walls. You continued to fall while watching the lights flicker and the doors to the rooms around you open and close. As you fall you see a girl with long black hair covering her upper face and she is holding an instrument- a biwa. The biwa sounds and you hit the floor with a thud, knocking the wind out of you. You were breathing heavily from the fall and getting thrown to the ground didn't help. Once you caught your breath and the dizziness subsided you opened your eyes fully and sat up. You looked around and saw that the maze of walls and rooms was now more neat and straight when you hit the ground. You looked up and saw the same girl with the biwa. "You- who are you?! What is this place?!" You shouted out, fear running through your body. The girl doesn't respond. You look around again and this time you see three people standing behind you. You stand up and stumbled backwards. "W-who are you people...?". One of the people start walking towards you. You start walking backwards and eventually started running away trying to find your way out. Right as you started running one of the people appeared in front of you in the blink of an eye stopping you from running. You run into him and you fall back from the impact. The man grabbed you and pulled you up above the ground to look at you. You kicked your feet trying to get back onto the ground. You looked up at the man and he hand six eyes and red flame marks across his face. "Y-you're not human- y-you're a demon!?".  You start trying to push him off of you to no avail. "Oh~ lord kokushibo~ what do you have there? Did a human fall into lord muzans castle~?. One of the other demons spoke up to the one holding you. You turn your head to look at the one that spoke and you looked shocked and scared "We need to kill it. Or let him eat it." The last demon spoke to the one holding pointing to the one who spoke first. After he said that you felt a surge of pain run  through you before you blacked out.