Boom! Boom! Boom!
This is not a festive drumbeat.
It's the sound of monsters knocking on the gates of our castle.
Send mercenaries to the battlefield to prevent them from entering the castle!

Q. Monsters are coming!
A. Try to treat them harshly so that they cannot enter the castle.

Q. Um...what is that? This is a huge monster I've never seen before!!
A. Yes, I am the boss. We have to defeat that too.

Q. Oh my, there are too many monsters!!
A. Don't worry! Since you have collected more taxes from the citizens in the castle, you can recruit excessive mercenaries.