A 34-year-old hikikomori is kicked out of his home by his family after the death of his parents. After his eviction, he saves a group of teenagers from being killed by a speeding truck, but loses his life in the process. When he comes to, he realizes he has been reborn as Rudeus Greyrat, in a world of swords and sorcery.
Naota is a normal boy who kills some time with a normal girl by a stream that flows underneath a bridge. Nothing unusual happens in this town. The fact that Haruhara Haruko crashes into the main character with her Vespa a short while later and subsequently hits him over the head with her Rickenbacker 4003 bass guitar doesn’t really make any difference to any other day here. The at first glance unconnected, bizarre events that don’t seem to follow any pattern whatsoever don’t change anything about Naota’s boring life, either – because nothing incredible ever happens in this town.
On the front lines of the war, Tanya Degurechaff, blond hair, blue eyes, and porcelain white skin, commands her squad with lisping voice. Actually, she is one of Japan's most elite salary men, reborn as a little girl into a world of magical warfare after angering a mysterious being who calls himself God.
