Streaming: Crunchyroll
Episodes: 12
Source: Light Novel
Episode Summary: The world’s finest assassin completes his final mission with efficiency and the utmost effectiveness, providing a model for the protégé he’s been forced to drag along by his governing agency. But the mission doesn’t quite go off without a hitch – the duo is spotted by a military drone on their way from the job site and are forced to make other escape plans. It’s during the night that the assassin proves why he’s the best – he’s quieted his emotions and never trusts anyone.
As the day dawns, the two arrive back at base and are provided tickets to Japan; here the assassin will begin a new life training others like him within the organization. But betrayal is in the cards and the plane flight ends almost as quickly as it began, with all aboard being killed as part of the organization’s plot to silence their finest. But the assassin’s frustrated soul is grabbed by the goddess, who offers him a tantalizing deal in exchange for his help in a certain matter. He’ll be reborn in another world, one of fantasy and magic, with his memories and skills intact if he promises to use those skills to murder the world’s Hero.