Fairy Tail: Receive Royal Knights at the Start

As soon as he opened his eyes, Rose, who understood most of the plot, traveled to Fairy Tail near Magnolia in the Kingdom of Fiore, and awakened the magic – Paladin Reception, which can receive Paladin-type Digimon, and found that he was close to the beginning of the plot. There are still more than ten years left, what can I change?