Shirou Inukai

Shirou Inukai stands as one of the central villains within the 'Eight of Obsidian,' his appearance perpetually frozen at the age of 22 while wielding formidable white-blade swordsmanship. He commands the demon-iron blade 'Mumyo,' a weapon capable of manipulating space, and regards human beings as mere raw material for forging swords. Initially approaching the protagonist Musashi under a guise of gentleness, he relentlessly pursues the 'Goddess of Obsidian' by any means necessary. His true power remains impossible to gauge, and his twisted nature makes him one of the story's most significant antagonists.