Behind the Mask

杉峰 at the Excavation Site says strange monsters have been popping up and disrupting their work.

Of course, I can't drive them off without doing some good, old fashioned research on them first!

If we don't learn about them, how will we keep them from coming back? Well, what do you say? Want to give me a hand?

Jolly good! Let's start by gathering 30 of the 木板s and 石板s that the 木面怪人s and 石面怪人s carry around.

Jolly good! Let's start by--wait, was that a no? I see. All right, then. Come see me if you change your mind.

Do you have the 30 木板s and 30 石板s?

Good job. Give me a moment to look over these 木板s and 石板s.

To start with, I need 30 木板s and 30 石板s.