I'm not sure the exact number. It depends on how many enemies we're going up against, in terms of our captors, that is.

[ Mikazuki doesn't like to see himself as being in opposition to the people who have also been kidnapped... maybe it's a little naive and it'll wind up with him being hurt someday, but he can't help it. ]

...And yes, you're right.

Judging by how we were able to get to that room for that trial, I'm going to assume it involves also finding the correct hidden door.