Leaving a convenience store, Subaru Natsuki steps into a bustling town filled with humans and demi-humans. With dragons and carriages serving as transportation, this place is clearly not the modern-day Japan he knows. But as someone who spends his time absorbed in comics and games, Subaru figures he must be a protagonist in this new fantasy world, wielding incredible magical powers.
To his disappointment, that isn't the case, and things quickly take a turn for the worse when he runs into a gang of thugs. Fortunately, a silver-haired beauty named Satella rescues him, all while searching for her stolen insignia. Grateful for her help, Subaru offers to assist in the search, which eventually leads them to a pawn shop. Assuming the insignia was traded for money, Subaru enters the shop hoping to negotiate with the owner about the stolen item. But instead of the insignia, they find a brutal assassin, and the encounter ends in their deaths.
However, rather than waking up in the afterlife, Subaru is stunned to find himself standing alone in the middle of daytime, as if he had never left the town at all. And so, his life in another world mysteriously begins for a second time.