Growing up as a normal boy, Luminous was not aware of the existence of Dragons until he was recruited by Nono and Professor Guderian. Indecisive, cowardly, clumsy and insecure, Luminous manifested no useful combat abilities, forcing him to rely on wits and sheer luck to survive. His skill is Markmanship, accompanied by a small floating robot at his side he named buddy, that transforms into two, advanced Pistols with unlimited bullets. But through the participation of a strange entity, Luminous made a series of deals, selling one quarter of his soul and body in exchange for killing Dragon Kings. Soon, making more deals with the entity will put his lofe at risk. Hes often seen with stylishly messy brown hair, fair, rosy skin and a good, average build. Hes described to be a normal boy at times, which often discourages him alot, but others say he has kind eyes. Despite being quiet, untrusting, and often solitary towards people higher ranking or popular, he begins to become a lot more chatty and friendly when Guest arrived. Expressing himself more— in a slow, measured way. He likes anime, video games and food, and enjoys other cultural culinary dishes and history.