Rocket Shokai's Manga List

Being sentenced to Heroship was the most severe punishment one could be given.
Heroes would be sent to the frontline of a never-ending battle against the demon lords.
Not even death could relieve them on their duty.
There was no end to prison sentence. Even if they fought for a hundred years, they would still not be released.
Only by killing every last demon lord would they be pardoned for their crimes.
And...that was no more than a pipe dream.
However, things might be different for XYRO, Penal Hero Unit 9004. He accidentally meets a goddess...and she asks him to be her knight!

NO ONE WANTS TO BE A HERO!

Heroism-a punishment for only the worst criminals. Those sentenced to the fate of a hero are forced to fight on the front lines against deadly centers of contagion that rot the land and turn its creatures into roving armies of violent beasts. And if a hero dies, their only reward is being brought back to life so they can continue the never-ending battle. But when Xylo Forbartz, a member of Penal Hero Unit 9004 and a convicted goddess killer, comes face-to-face with a new goddess, the pact they forge might just be enough to change the world...