"Hey future researchers Serena here." Serena said, with Ash in the background. "We're here in Alola, as Ash is getting the remaining Z Crystals known."
"So far, I've found six. Now I've been looking for a way to find some of the long lost crystals." Ash pointed out.
"Long lost crystals?" Serena asked.
"Allow me to explain." Rotomdex piped in, switching the camera to his screen. "There exists a few complete sets of Z Crystals, and while there are known trainers with those crystals, some haven't been earned in years, their trial locations lost to the generations."
"Exactly. At a time the Dragonium Z Crystal was one of those, but after Gladion and I found ours, it's been deemed standard." Ash said. "But there are a few others, such as the Psychium Z and the Fairium Z crystals."
"Psychic and Fairy?" Serena questioned.
"Exactly, now there are a few ideas on where to get them, but I have a good idea on a psychic type expert known for it's tough battles, and giving grand trials of its own." Ash said.
"So that's why we're on a boat to Akala." Serena realized.
"Among other things." Ash said, looking at an old photo. "I'll explain more once we get there."
At the Ruins of Life
"Ash! You can't be serious about challenging another island guardian!" Rotomdex exclaimed.
"Ash, why didn't you bring your phone for this instead of Rotomdex?" Serena whispered.
"I know he's chatty, but he's very knowledgeable." Ash said. "Also don't compare him to the Rotomphones, he's more than just a Pokedex or a Pokemon."
"Exactly, I'm the best of both!" Rotom said energetically.
"Lele Lele Lele Lele." A voice cried out as pink sparkles rained down around Ash and Serena.
"She's here." Ash said, adjusting his Z Ring.
"What is she?" Serena asked, pulling out her phone.
"Allow me!" Rotomdex said, jumping between Serena and her phone. "Tapu Lele, a Psychic and Fairy type, The Guardian deity of Akala is guiltlessly cruel. The fragrant aroma of flowers is the source of its energy. As it flutters about, it scatters strangely glowing scales. Touching them is said to restore good health on the spot."
"Okay." Serena said, with a sigh.
"Tapu Lele, I'd like to challenge you to a Grand Trial!" Ash called out.
"Lele!" Tapu Lele said, rushing towards Ash and Pikachu.
"Pikachu use Iron Tail!"
Pikachu leapt into the air, slamming his tail against Tapu Lele, knocking the psychic type back momentarily before it shot forward again with a Moonblast.
"Pikachu use Thunderbolt!"
Pikachu released a bolt of electricity only to be matched by a Moonblast again, the two attacks pulsing at the same frequency.
"Incredible." Serena said in amazement.
"Now Pikachu, use Corkscrew Crash while we have the chance!" Ash said, flipping in his Z Crystal.
Pikachu spun rapidly, rocketing at the guardian Pokemon as it was blasted into the air.
"Pikachu use Discharge!"
The electricity was quickly stopped by a strange energy, holding all the sparks in a large ball with a purple glow.
"That's Tapu Lele's Psychic attack!" Rotomdex exclaimed.
"Pikachu use Thunderbolt!" Ash called out.
Another bolt of electricity shot out, blasting Tapu Lele into the forming crater. Finally, Tapu Lele floated back up, spinning with a laugh. Tapu Lele rushed forward, stopping right in front of Serena.
"Get away from her!" Ash exclaimed.
"Lele." Tapu Lele said, sprinkling more sparkles on Serena. They gathered in her lap, growing into a purple crystal.
"Ash, I think this is for you." Serena said, as Tapu Lele flew off.
"Maybe, but that doesn't explain why Ash wanted me here." A new voice said from off camera.
