Howling Soul

In response to the summons of the Heroic Soul Seat, Mu Yan traveled to a parallel world, where soul power became the core of the development of science and technology. It also created mutant species of animals and plants, monsters known as soul beasts. In order to fight against the invasion of soul beasts, humans have developed rituals that rely on soul power to summon heroic spirits that appear in historical epics and myths and legends. The humans who can do it are the best in a million.