Show Book Containing Kamasylvia's Knowledge

Summary Wow... What's this?
I've never read a book like this before!

Quest Text I can't find any answers in the library.
And other people don't want me to ask them about it.

Summary The story originated far before the establishment of this school.
There was a Valkyrie who got called to a war that could not be won.
She put her precious possessions in a chest and hid it in the tower on top of the hill.
And then she put a lock on that box
that could only be opened with her dagger.
Legend has it whoever gathers all the Dagger Fragments
and opens the chest
will find something that can grant their every desire.