A part of the pulscorn side-story. Long story short, He did something stupid that made him lose his fight against Mocchi. Then he cheered Suezo on the next fight, leading Genki's team to win the final.
All this angered his one-time breeder, who decided with his other monsters to rough him up before leaving him on his own.
When Genki's team found him, he was lying down and bruised. Of course, Holly and Suezo were the most worried for him since they're practically family.
But the pulscorn didn't care for this incident. His only goal when joining the tournament was to get famous enough to find Holly and Suezo. Now that he's reunited with his two friends, he can bring them back to the village.