"I Started Out as a Beggar, but After the Change I Became a Master of Catching Monsters"

Traveling back in time, you start out as an out-and-out beggar. It doesn't matter if your starting point is low. Let's see how the protagonist reverses the situation. All living beings suffer. The story of monsters and training to become a master of catching monsters. Purpose: Monsters can be divided into good monsters and evil monsters. Love is boundless. In order to save the vast territory of the sea,