On Sai - Miogin base

What does "be yourself" mean?

The Miogin assembly base is in trouble, running out of food soon. The pirates put you in debt, and a nobleman is also taken from the tax intended for Ferrington.
Márk and the mechanics are hoping for a divine miracle, but Artúr would rather solve the situation without the entities.
Artúr openly expresses his doubts, but this leads to an unexpected consequence...
What happens when a leader is not followed?
Márk tries to understand Artúr, who spectacularly rushes to his doom and perhaps drags the base with him.
How strong is the bond between the two? Where is the limit of friendship?
What should he do if Artúr already risks the secret of little priest Adalbert?
The war is going on, and it may be that the Christian group living in disguise is not only shunned by pirates...
The short story takes place after the 2nd volume of the Leaking Darkness series, Lucy.