Y/n was sitting in class listening to music with some headphones as he waited class to start, he jumped when Ash came in class complete panic.

When asked why, he revealed to have lost his electrium Z.  Which shocked everyone but Kaiwe who isn't there yet. Ash was worried this will anger Tapu koko, but the others said Kaiwe was the one he should be worried about.

Ash then imagined Kaiwe red hot in anger like his fire Pokemon asking him that he lost the crystal angrily , before punishing him with an inferno overdrive.

Ash was beginning to panic more, Rotom wearing a blonde wig said he'll solve "the case of the missing Z crystal.".  

Turns out that Rotom is a fan of the show "Detective Laki", and with Pikachu with his side, he'll swore to find the crystal before Kaiwei finds out.  Kiawe arrives at school causing the others to panic as Kiawe wonders if he missed something as Rotom and Pikachu leave.

 Professor Kukui informs the class that their next lesson will be dealing with Pokémon moves and to meet up in the schoolyard.  They all head out but as Ash goes outside, Kiawe asks where Pikachu is . Ash makes up an excuse about Pikachu having leaving Kiawe disappointed as he was hoping to practice being hit by Gigavolt Havoc. 

Y/n was practicing some hand to hand with the rangers, while their Pokemon was practicing their moves. 

Not too long after, Rotom come back with Pikachu. Ash in his excitement unfortunately blew his cover, which lead him being chased by a furious Kaiwe.

Before Kaiwe could blast Ash to kingdom come with a inferno overdrive, Rotom then stopped them, requesting that they listen to what he has to say before anything.

Back in the classroom everyone was in their sits, Ash asked Rotom for the crystal but the living Pokedex said it was still in the culprit's hands. 

"The culprit is..... Kaiwe!" Rotom said while pointing at him.

"Huh!?" The accused said with a horrified look.

"Huh?" The most of the class said with a suspicious look.

"NO! K-Kaiwe is the culprit?" Professor Kukui asked dramatic look.

"T-That's ridiculous! How could it be me Rotom?!" Kaiwe yelled while standing up and slamming his hands on his table.

"Maybe you should show some evidence before accusing Kaiwe Rotom?" Coco said with a sweatdrop. She and Ahsha had solved some cases before, and they had a feeling that Rotom doesn't have any solid proof.

Rotom then showed a video of the "evidence", he claimed that Kaiwe had taken the crystal while he was shaking Ash's hand the day before.

"Would't Ash noticed if that happened?" Y/n asked with a faceplam.

The living Pokedex  still believes that Kaiwe was the culprit, but as more of the video was shown, more of Rotom's claims were proven wrong.

Ash said that he remember placing the crystal on his desk, as Rotom held it's head trying to think, Pikachu played with Rotom's wig. And out came the missing crystal.

Everyone was stunned, was Ash recovered quickly and held it up happy. "My electrium Z! Alright!"

"But how?" Rotom asked. "Could it be?" He said remembering something.  "The electrium Z got caught in my hair last night?"

"So the culprit ...." Rotom didn't need to look behind him to know Kaiwe is burning hot with anger as he begins to sweat heavily.

"Is Rotom!" Kaiwe roared as he chased Rotom out of the school.

Back to the others, most of them could only watch the two with blank looks.

"You know what?" Sophocles asked. "Rotom on borrowed time." Most of the others nodded in agreement.

They jumped when a flash of light suddenly appeared in front of the classroom. When it died down, Palutena was standing there with a Pokemon on her shoulders.

"Meloetta!" Ash said in surprise, as did Pikachu. Not expecting to see the melody Pokemon.

"Would you mind if i borrowed my student?" Palutena asked Kukui.

Kukui nodded, seeing that class was over for the day.

"Aura guardians can teleport?" Mallow asked.

"Only highly skilled ones, but yes." Y/n nodded.

The older guardians then teleported  them to a place Y/n recognized, the underground ruins of Unova.

The two guardians when deeper then Y/n remembered going when he was younger, Palutena had asked him to withdraw the three he caught here years ago. She had a feeling they'll be needing them.

They reached a door, above it was dots shaped like of and "x" and "y".

In Braille it read " when gather the three giants, the door of destiny will be opened."

The Braille glowed lightly before the door opened, when they entered, they saw two statues.

The guardians then saw the Braille patterns above the door on the floor. 

Meloetta suggested that they step on them, they noticed that the Braille lit up as they did. Once all of the Braille was lit up, the room began to shake.

The statues began to crack, before suddenly exploding . When it died down, the revealed two Pokemon the guardians never seen before. And they bear a resemblance to Y/n's legendary Titans.

"I heard of them before." Palutena said. Getting a curious look from her student. "Their known as  Regieleki and Regidrago, two Pokemon also created by Regigigas." Shocking Y/n. " However their known to be sealed in the Galar region. So why are they here?" She questioned.

"Anything else?" Y/n asked as he prepared himself for a battle.

"They say that these two hold the strongest power of any electric and dragon type energy of any electric and dragon type Pokemon out there." The older guardian explained. "They also say that Regieleki can power the Galar region by it's own and Regidrago 's body is made of pure crystallized dragon energy and was sealed away before it could be made complete."

"Great..." Y/n grumbled.

"Y/n, aim for the Braille on them. " Palutena said before Y/n could sent out a Pokemon. "Remember what i taught you at Wish cave?"

Y/n then threw two heavy balls at them, while Regidrago was too slow, Regieleki was surprisingly fast. It was behind the guardians before they could blink, but Y/n's heavy ball suddenly followed the lighting titan. Palutena trapped it in place with aura pillars.

 Both Pokeballs hit their mark, 1..2..3 and with that, Regiekeki and Regidrago was caught. 

The two then teleported back to class, where his classmates waited for Y/n.

"Two titans that was never seen before?!" Rotom asked in surprise. Y/n had showed the two to his classmates, Ash was most surprised as the legends he heard has only the original three and Regigigas.

"Rotom, if you connect with my phone, you'll be updated with the data from the Pokemon from the Galar region." Palutena said while holding it up. "Will you do so and inform everyone of Y/n's new Pokemon?" She then asked the living Pokedex.  

"I'll be glad too." Rotom said as he connected to her phone. A few minutes of updating his data later.  Rotom did as Palutena requested and informed the others of the two titans.

"Regieleki, the electron Pokemon. A electric type. Its entire body is made up of a single organ that generates electrical energy. Regieleki is capable of creating all Galar's electricity."

Regidraco ,the dragon orb Pokemon.  A dragon type. Its body is composed of crystallized dragon energy. Regidrago is said to have the powers of every dragon Pokemon."

"I'll be needed back at guardian school, apprentic L/n?" Palutena then suddenly said.

"Yes?!" Y/n said going ramrod straight, not expecting be called that again and standing straighter by instinct.

She giggled. "I'll entrust you with Meloetta, please take care of her." She said while giving him a friend ball.

"I will." Y/n said relaxing, now knowing his teacher was only playing with him.

After she left, everyone let for their homes. Y/n could only wonder what the future will hold for them all.

Done and done, i know they could't be found in Unova but i thought this will make things interesting. Your next picks are Heatran, the forces of nature or the Galarian legendary birds.  If you have something else in mind, tell me in the comments bellow.