Dead Living Summoning System

A young man appeared in the forest and was chased by a weird Tiger which has the size of a truck. Got into a cave to stay alive, but end up in a near death state, before gaining a new life. "Let's us get ready! And! Open the Curtain of the Dead!" "Welcome back to the world of living! Gol! D! Roger!" "Yhwach and Yamamoto! I know you both are enemies! But please right now! Focus on that beast!" "How does it feel to walks on the ground again. Mavis Vermillion!" I do not own any anime, novel or the cover.