Leonard, Kyle

カイル・レナード

The series' protagonist. Following the destruction of his hometown by the Demon Lord, Kail joins the human resistance. After one year, he leads a suicide squad to attack and kill the Demon Lord, a mission that comes at a great cost. However, before succumbing to his injuries, Kail manages to touch a Divine Dragon's Heart artifact that the Demon Lord was protecting, which causes him to travel four years into the past; three years before the Demon Lord launched his invasion force into the lands of the other humanoid races.
Now with a chance to start over, Kail, along with a couple of his friends, departs from his home village in order to become legendary heroes that can help better prepare the human resistance for when the time comes that the Demon Lord launches his Great Invasion.