Where are we, sensei? Is the diary really here?

You wrote in your diary three days ago on the fourth line that you saw two crows here. According to that, if they weren't sent by tengu and noticed you because you were at a relatively high altitude, this is where we should look first.

They might've mistook your diary for food, but it's also possible that they've become youkai, or were used by some youkai other than tengu. Be careful, even unconscious youkai should be wary of crows. I can shoot danmaku, but I'm not in the habit of doing it...