DinoCore

Once a pizza delivery boy, Rex chances upon the Dino Core and ends up becoming a Dino Master to protect the universe.

Rex trains for a 5-unit combination, but just keeps goofing around. The members of the Dino Core aren’t ready to trust Rex.

Rex grows as a Dino Master, building the trust of the Dino Core members and successfully carries out a Core change.

Tyranno, who had always felt left out, is entranced by Kaya’s charm. But, on his own, he firmly resists, and Rex and his friends, who had been getting ready for birthday.

Kaya finally reveals her true form. Rex and his friends feel betrayed, having thought of Kaya as a friend only to discover that she’s a villain, but Rex accepts her as a friend.