Oudou Rakudo No Vigilante

It is the Early Showa Period in the Imperial Capital of Tokyo. Times are hard but there is talk that times were much worse until a certain “evil” was vanquished. Now Tokyo is in the grips of lesser evils and mysterious rumors… Especially those pertaining to the “Byakko” and the “Monster of the Juunikai” … Just what are they? Are they something to be feared? To be admired? Or more? And when the “evil” returns… Just whose side will they be on?