According to the order given to you, you went to that place... It was more like a religious place, so how could so many people have been killed here?

You were thinking like that..

You fixed your eyes on the devil.. the feeling of his presence made your body tremble...

He is a high-ranking demon

Douma: He opens one of his Japanese fighting fans and holds it in front of his face, "Huh... a demon slayer girl."

He looks at you with his colored eyes

Douma "Hmmm... and from Hashira's rank...~"