This Batch of Hosts Is Hard to Handle [Western Fantasy]

Note: The System is the main character!!!

The Demon King Development System binds itself to all sorts of people, determined to train them to become Demon Kings, abduct princesses, and then be defeated by heroes. Of course, that was the original script. But its Hosts never obey, so the System decides to bind multiple people at once.

A reborn miser: I'm a woman! Why would I abduct a princess?

A yandere princess: Abduct myself? Then I can get him to come here, right? Actually, I'd still rather lock up the hero so I'm the only one he can see.

The only female holy knight in the Church of Light: ...To be honest, I'm the hero.

A modern person who transmigrated here: The Church of Light summoned me, and they insist I'm some kind of holy spirit vessel. They even want me to be a saintess. I'm pretty happy with my job, so I don't want to switch for now.

Demon King Development System: You lot upstairs, pay attention! It's time for the play to begin. Once you're aboard this pirate ship, you're all mine!

(There are also elements about building a Demon King's castle.)

Theme: Life is difficult, but don't fear the obstacles.