At his most desperate and most broken down after being rejected by all of the royal candidates, Subaru Natsuki seems yet again destined for another terrible fate. But a mere moment before his misfortunes consumed him, Subaru finds himself being offered aid the most unlikely of sources. Not a knight, not a hero of destiny, but a butler, and a devil.

Separated from his home and family, a certain butler must figure out his strange new situation, and possibly a way to get back. Before any of that though, he's gonna need a new job...

Overlord x RE:Zero crosover what do you ecpect