Briefly about Former General Is Undead Knight manga:
At the conclusion of the unification war, Lambert, one of the famous generals from Regios kingdom, perished unnaturally because it was believed that he was plotting a rebellion against his lord.
He was unintentionally brought back to life as the demon known as Undead Knight Lambert, whose entire body was covered in a flashy Demon Metal Organ, two hundred years later, when the era had changed and the Regios kingdom had entered its calm era.
Lambert decided to punish the wrongdoers while taking in the serene scenery of Regio’s land. But Lambert, the most successful general of the tumultuous age, found this quiet period to be essentially an easy mode.
