An ordinary salaryman is killed in a traffic accident -- and becomes reincarnated as a powerful dragon!! Deemed evil even though he’s never committed an evil act, he’s approached by all sorts of challengers seeking to slay him.
The adventurer Kuroe, nicknamed the “Devil King Slayer,” is one challenger that won’t give up on defeating him. But one day they have a heartfelt conversation that establishes them as friends, and the two then set out on their own adventure. These are the travels and story of the “evil” dragon named Ja.