Dead Mount Death Play Series by Ryohgo Narita, Shinta Fujimoto

It's a showdown for the ages as the legendary hero takes on the Corpse God necromancer, but when the dust settles, something isn't quite right... In the final moments of their epic confrontation, the Corpse God's final gambit shot was wholly unexpected—reincarnation magic! Across space and time, a boy named Polka Shinoyama awakens feeling...not quite himself...Who could've expected that the climactic battle between good and evil would turn out like this??

Disaster personified has arrived, but his purpose is unknown. One thing is certain-Polka and company are in the presence of raw power. With death upon them, Shinjuku is in frenzy...The true Death Play has begun.

The Fire-breathing Bug has struck at Polka's family home, yet some things about the attack aren't adding up. After apprehending the arsonist, Corpse God and Polka must face someone even more intimidating, the head of the Shinoyama family - Polka's father! Will Corpse God prove to be good for the promises he makes?

Solitaire's latest stunt-filling the sky over Tokyo with a fleet of dirigibles-has the whole town talking, but no one is as shocked as Polka. Emblazoned across each airship is the emblem of the empire he served in his previous life... moreSolitaire's latest stunt-filling the sky over Tokyo with a fleet of dirigibles-has the whole town talking, but no one is as shocked as Polka. Emblazoned across each airship is the emblem of the empire he served in his previous life. Could other vestiges of that world be crossing over into this one? However dear to him, the symbol of his homeland has apparently taken on a new meaning, and his connection to it places Polka in the thick of the conflict between Solitaire, the police, and a whole band of dangerous troublemakers! So much for a peaceful life!! less