A 27-year-old American named Ryan was doing his usual morning run through a forest in the United States Midwest when he was attacked by a magical orb that transported him to another world. While in this other World, he finds himself captured by a tribe of Dark Elves that summoned him and another human. This other guy that was captured with Ryan, is a Japanese teen who goes by the name Hiro.
Unfortunately for Ryan, Hiro is a delusional edgy otaku who believes he's the Main Character and thinks he can get away with anything.
This just adds more of an obstacle for Ryan to overcome. And he's worried about what the Dark Elves are planning to do with them as they force them to kill monsters. Causing their bodies to absorb mana. And worst of all, the mana from all the humans and monsters he had slayed has been affecting his body in weird ways as he begins to transform into a Dark (Female?!?) Elf with the extremely rare ability to heal anything.