Come to think of it, last year another customer a bit like you came to ask about demon books, and took an interest in that same place.

Could this be the start of an Oki Islands boom?

—Here we go.

The memoirs of one journeying tengu.

No... it's alright.

In the Oki volume, a young girl they know drowns in the sea, and becomes...

A youkai... no, a ghost? Hmm?

Well, in any case, she becomes a monster. It's very sad...

You can really feel the sorrow...

...I'm sorry, I got carried away and spoiled it...

I should know that plot better than anyone.