The Most Powerful Dragon-Slayer {God-Slayer} Magician's Cute Girl Summons

Dark Dragneel said, a world composed of dragons and magic. In the past, humans here were actually a world dominated by dragons. Due to some reasons, it became a world dominated by humans four hundred years later. I have an older brother who is known as the strongest dark magician Zeref, my younger brother is known as the strongest demon, and I am known as the strongest dragon magician. I also have a cute girl summoning ring. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.