Rebirth in the Soul Street: Becoming a Demon King in Another World

A soul from another world, a demon king from the world of Zhenhun. He is an outcast from the magic world, the creator of the tenth forbidden magic, and a visitor from across the world! He is a wayfinder in the world of Zhenhun, a navigator of lost magical creatures, and a demon king who achieved success in another world! On his way back, he achieved the coexistence of magic and spiritual power, saved the dying souls, and ended the Holy Grail War! This is a world where humans and souls coexist, with Zhenhun Street that absorbs the souls of the dead, Zhenhun generals who maintain order, and Fuyuki City where "gas explosions" often occur. Note: Comic fan fiction, not anime fan fiction...