"In my past life, I was a feared yakuza enforcer who died protecting my sister. Now? I’m stuck inside her favorite MMORPG—as the legendary, holy SSR paladin, Jeanne d’Arc!" After a brutal tragedy claims their old lives, Satsuki Ezo wakes up inside the grand fantasy world of Orthelis. The catch? His soul has been reincarnated directly into the gorgeous, gold-armored body of the legendary Holy Vanguard, Jeanne d’Arc—and his traumatized little sister, Miyu, is now his "Master" commanding their flying train, the Arcanthia! To protect his sister from new world threats, the former underworld thug must learn to wield holy magic, fly through the skies, and act like a pristine knight of salvation—all while keeping his rough-and-tough street instincts alive under a maid-of-honor's sacred banner.