戦の準備に自陣把握は不可欠。

城塞探索している彼を、
マスター達も追ってきたようだ。

もっとも最大の心配は、
案内役の息子に向けられたものかもしれない。

When preparing for battle, assessing one's own territory and the lay of the land is critical.

And while he's exploring the fortress, it appears that his Master has come chasing after him.

Though it looks like Master is more worried that the tour guide is his own son.