Sunburst Island

Ash and the gang were still crossing the ocean on Lapras when Ash suddenly spotted a glass bottle in the ocean. 
"What's that?" He asked.
He stopped Lapras to check the bottle out; there was a written note inside it. 
The note said; "If you know anything about a Pokemon called the Crystal Onix, let me know right away".
"Crystal Onix?" Ash asked. "That sounds interesting. We should check it out." 
"Yeah, let's do it." Tomo cheered. 
"I would like to see this Crystal Onix myself." Tracey said.
Misty was interested as well.
They went to the island where the bottled message came from, Sunburst Island.
"Sunburst Island is famous for it's shops containing things all made from glass." Tracey explained.
"My mom has a glass figurine of a Pidgey." Ash said. "She received that as a gift a long time ago."
"I remember seeing that." Tomo added. 
"My sisters have glass figurines too." Misty continued. "Violet has a Seel, Daisy has a Staryu and Lily has a Goldeen."
The gang walked down a street with a lot of glass shops. You could see glass ornaments everywhere; glass vases, glasses to drink out of, glass plates and bowls and even glass Pokemon figures. The gang was enjoying looking at the shop when they heard a commotion. A man was picking on a little girl.
"You two should just close this shop." The man said. "Your brother has no talent for making glass figurines."
"Yes he does." The little girl sobbed. "He's just having trouble."
"Trouble or not, being right next to your shop is killing my business." The man said.
The gang didn't like what was going on.
"What's the problem here?" Ash asked. 
The man turned to the gang.
"Just because your shop is right next to there's doesn't mean you can act like that." The man grunted and went back to his own shop.
"Are you okay?" Misty asked the girl.
"Yes thank you. My name is Marissa." The girl said.
"Hey Marissa." Ash said. "Are you the one who wrote this message?"
He handed her the note he found in the ocean.
"You found my note!" Marissa exclaimed excitedly. "So do you know about the Crystal Onix?"
"Unfortunately no." Ash sighed. "I don't think any of us do."
Marissa was disappointed.
"I was hoping someone would know about the crystal Onix." She said a little sad. "Because it would help my brother with his glass making."
Ash and the gang were intrigued by this, so Marissa brought them to her brother's glass shop. Her brother Mateo greeted them.
"I hope my sister Marissa hasn't been bothering you." He said.
"Of course not." Ash said. "But I must ask. Why is your glass shop not full of glass objects?"
Mateo sighed. 
"It's because I'm not as good as my grandfather was." He said.
"My grandfather had the ability to make his glass Pokemon figures look like they were alive." Mateo explained.
"When he was around this glass shop was a real success, but I'm nothing compared to my grandpa." He showed them a glass figurine his grandpa once made.
It was an Onix figurine and it was sparkling like crystals. Then he showed his glass figurines. They were a Geodude, Pidgey and Dugtrio. They were pretty, but didn't shine like crystals.
"They don't look bad for a first try." Ash said.
"Yeah, but they don't have the sparkle, inner fire or soul." Mateo replied.
"What gave your grandpa the inspiration to make glass Pokemon figurines?" Misty asked.
"The crystal Onix." Mateo answered. "Grandpa told me and Marissa about his sighting of the crystal Onix and that glass figurine is his way to remember it."
"Then that's it." Ash said. "If we find the crystal Onix, you'll get the inspiration you need."
Mateo and the others thought that was a great idea.
Mateo, Marissa and the gang began searching for the crystal Onix in the forest.
"So where do we start?" Tomo asked.
Tracey released a Pokemon from one of his Poke Balls, a Venonat.
"My Venonat's radar eyes can help us look for the crystal Onix." He said.
Tomo was surprised Misty wasn't freaking out after seeing Venonat, since it was a bug type Pokemon.
"After seeing your Venonat and Ash's Venomoth plenty of times, I'm used to them." Misty explained.
Venonat used it's eyes to locate Onix. It did find an Onix, but what it really was a pile of rocks shaped like Onix.
"I think we need to search another way." Tracey said.
He returned Venonat and brought out his other Pokemon, a Marill. 
"Ah, that thing is so cute!" Misty squealed.
Ash checked Marill out on the Pokedex.
"Marill, the Aqua Mouse Pokemon. The tip of it's tail, which contains oil without water, lets it swim without drowning."
"My Marill's ears can hear anything no matter how far the sound is." Tracey said. 
He took out some sort of recording machine from his backpack and played a sound of a Onix on it.
"I use this to record any sounds from a Pokemon."
Marill's ears led the gang to a foot path which led to a small island.
"The crystal Onix might be on that island." Mateo said.
The gang walked to the island and found a big cave. Inside the cave the walls were lined with crystals.
"These crystals must mean we are getting close to the crystal Onix." Tracey said.
There was also a big lake in the cave. Marill jumped into the lake and then came out again.
"I think Marill has seen something in the lake." Tracey said.
Suddenly a figure burst through the water; it was the crystal Onix.
"What an amazing thing!" Tracey gasped, drawing it in his sketchpad.
"How is it able to live in water and not be affected by it?" Misty asked.
"It's body is made of crystal, not rock so it won't erode over time." Ash said. "This probably makes water type moves useless against it." 
"In that case." Mateo said. "I'll use my glass making partner."
His glass making partner was a Charmeleon. The crystal Onix began throwing big crystal rocks around; that was the move Rock Throw.
"Charmeleon, Flamethrower!" Mateo ordered.
That weakened the crystal Onix somewhat. Mateo stared at the flames spreading around the crystal Onix with widened eyes, as if he witnessed something he had never seen before.
When the crystal Onix fell down in defeat, Mateo breathed heavily.
"I've found my inspiration." He said. "See the flames on the crystal Onix made me see what I had been missing with my glass figurines." 
The gang and Marissa were happy to hear that. The crystal Onix got up and softly roared at Mateo.
"Onix, I thank you for letting me battle you and giving me the inspiration I needed." Mateo said. The crystal Onix softly roared again.
"It says it wants you to capture it Mateo." Ash said. "It can sense you have a true heart and wants you as it's owner."
Everyone was surprised.
"Is that what you want?" Mateo asked Onix.
The crystal Onix nodded yes. Mateo took out a Poke Ball and captured the crystal Onix.
"Onix I promise I will always take care of you." 
"And I will too." Marissa smiled.
In no time at all, the gang was now back in Mateo's shop and he was now making glass Pokemon figurines again with Charmeleon. 
"Ash, Tomo, Misty and Tracey thank you for all the help you have given me." Mateo said.
"I'm glad that everything turned out okay." Ash smiled.
Mateo gave Ash a thank you gift; a small glass Pikachu figurine. Then the gang said goodbye to Mateo and Marissa and continue their journey.