"So you want to challenge me to another grand trial battle?" Nanu said lazily. "And why should I accept?"

"I want to earn the Z Crystal that Tapu Bulu entrusted you with." Ash said with confidence.

"I would like to see proof that you've gotten better, and then maybe I'll consider it." Nanu said.

"How about these." Ash said digging into his pocket and pulling out the Flying, Fighting, Poison, Bug, and Ghost Z Crystals.

"You've been busy." Nanu said with a bemused smirk. "Same rules as last time."

"I know exactly who to use." Ash said, grabbing a Pokeball.

"Oh you do?" Nanu said. "Then come out Krookodile!"

"Impidimp I choose you!"

"Krookodile use Stone Edge!"

"Impidimp use Play Rough!"

Stones jutted from the ground as Impidimp scuttled forward, scurrying around Krookodile and clambering about it, punching it a few times.

"Krookodile use Crunch!"

"Impidimp use Taunt!"

Impidimp leapt right in front of Krookodile's mouth, laughing when he jumped out of the way of the attack.

"Krookodile use Stone Edge!"

"Impidimp use Play Rough one last time!"

Impidimp struck Krookodile a few more times, causing the ground type to fall in defeat.

"Let's see how long he stands up to me." Nanu said. "Radícate come out!"

The large Alolan Raticate landed on the field with a thud gnashing its teeth together.

"Raticate use Super Fang!"

"Impidimp use Play Rough!"

Impidimp was fast, but not as fast as Raticate as he was caught in the Pokemon's teeth.

"Impidimp use Drain Punch!"

Impidimp closed his fist, striking the side of Raticate's face, releasing its grip on him.

"Impidimp use Play Rough!"

Impidimp scurried about, hitting Raticate and launching it into a nearby steel beam.

"Two down, you have gotten better, but you're still not good enough." Nanu said. "Persian come out."

"Impidimp use Play Rough!"

"Persian use Slash!"

Impidimp was launched backwards, tumbling to a corner.

"Impidimp use Thief!"

"Persian use Power Gem!"

Nanu and Persian were surprised at the speed of Impidimp this time as he was around the arena in the blink of an eye.

"Well, I suppose its time to end this." Nanu said. "Persian its time to use Blackhole! Where'd it go!"

"Impidimp.' Ash scolded.

"Dimp." Impidimp said, giving Ash puppy dog eyes.

"Where is it?" Ash asked.

"Dimp!" Impidimp argued, kicking the ground.

"You know you're not supposed to take those." Ash scolded.

"Let him use it, the little guy sure seems eager." Nanu said.

"Alright, Impidimp let's give it a try." Ash said.

"Dimp!" Impidimp said excitedly putting the Darkium Z crystal in Ash's Z Power Ring.

"Okay, Impidimp use Blackhole Eclipse!" Ash said.

The air grew thick before it began to spin, causing debris to lift up from the ground, eventually picking up Persian as he was spun towards the attack. When Persian finally landed it was knocked out.

"Here you go Nanu, sorry again about that." Ash said, handing back the crystal.

"Keep it kid, you earned it." Nanu said. "Though I heard Kukui has a special surprise for you, you might want to head back to Melemele."