You, who come from another world, have truly unlimited potential.

In the dark sewer, a slime was born silently!

He is a slime with a flexible moral bottom line.

For some beings, he is absolute evil, but for some beings, he is the only salvation!

A brand new future is born in destruction. He is the absolute demon king, the master of the seven deadly sins, the king of monsters, the slime!

"Will you sign a soul contract with me and become my ship girl?"

"No."

"Why?"

"I am an abandoned ship girl."

"What a coincidence. I am a commander who has no command qualifications."

"You want to be my commander even though you don't have command qualifications?"

"Well, actually I am a top student of Donghuang's Commander Academy-"

"What kind of contract do top students of the academy want to sign with an abandoned ship girl like me?"

In the era when ship girls with minds were considered "mutants" and then controlled and eliminated, the contradiction between humans and mutants became more and more serious.

Finally, after the first appearance of the super rare ship girl, this contradiction was pushed to an irreversible end.

Powerful weapons should not have their own will, and experiments to erase the minds of super rare ship girls were put on the agenda.

But!

- Even weapons should have free will!

The mutants roared with long-suppressed anger, and the increasingly dissatisfied anger was completely ignited.

The war between humans and mutants began in the "peaceful era".

...

When will true peace come?

All encounters in the world are reunions after a long separation.

They who have been lost for a long time will eventually find their commanders again.

…

"May victory crown you, Commander."