Now use the Kusarigama to return upstairs, stand on the wooden plank and keep looking behind you; we need to go down one more time.
Enter the courtyard ahead; there is a resource chest behind the box on the right.
After picking it up, enter the house on the left. Interact with the dialogue at the door to receive some Dust. You can find materials on the left side of the house.
You can obtain the book "Our Lady #1: The Holy High Oracle" from the table in the house on the right.

