Before Sinnoh

When Ash finally returned to Pallet Town after finishing his aura training he was welcomed home by his mom, brother, Prof. Oak and Tracey.
"Did you finish your training Ash?" Prof. Oak asked. 
"Yes my aura training is over so I can finally come home and get ready to head to Sinnoh." Ash said.
Prof. Oak noticed a Riolu standing next to Ash.
"Ash is that your new Pokemon?" He asked.
"Yes I received Riolu from Riley after I completed my training." Ash said. "And I caught three other Pokemon while I was there too."
He released his Piplup, Shinx and Budew from their Poke Balls. Riolu hadn't been in his Poke Ball because he didn't like it so he was staying out. 
"Wow Ash I can't wait to hear your stories about Rota." Delia said.
She invited Prof. Oak and Tracey over for dinner and they accepted because they wanted to hear Ash's stories too.
At dinner time Ash told everyone about his stay at Cameran Palace, how Riley helped him train his aura, how he captured Piplup, Shinx and Budew and when Riley gave him Riolu when he was still an egg.
"The aura training was hard." Ash said. "I was exhausted most of the time and I ended up getting bruises trying to protect myself from the tennis balls. It took me weeks to get the aura sphere and aura shield right."
"Well Ash even though you had quite a time, what's important now is that you completed your aura training." Prof. Oak said.
"Yes and the best part is Tomo and I can finally go to Sinnoh." Ash said.
"Speaking of Sinnoh Ash." Tomo said.
He told his brother about his wish to become a Pokemon ranger and challenge the gyms in Sinnoh as well as enter the Sinnoh League. 
"That way my Pokemon and I can become stronger before I head to the ranger school." Ash thought that was a great idea and then Tomo told Ash about his Pokemon training, some of his Pokemon evolving and practicing gym battles with Brock and Misty showing him his Boulder and Cascade Badge. So that dinner was filled with talking and talking until it was time for bed.
The next day...
Ash and Tomo were getting their stuff ready for their journey tomorrow. Ash was taking his Piplup, Riolu, Shinx and two Aipom. His Aipom wanted to come on the journey too. Ash had planned that he would be swapping his new Pokemon with Vigoroth, Arcanine, Masquerain, Tropius and his two Aipom, but the Aipom wanted to go on the journey now. Since Arcanine, Vigoroth, Masquerain, Tropius and the two Aipom hadn't been taking part in anything yet Ash was going to use them through Sinnoh too. Tomo was taking his Growlithe, Electabuzz and Magmar. Delia had made some new clothes for Ash and Tomo. Ash had a sleeveless black jacket with a big yellow stripe across it, a white t-shirt, blue jeans, blue and black trainers and a red and black hat with a blue Poke Ball design on it. The only thing that was the same was that he had finger-less gloves. He had a green backpack similar to his other one, with a white Poke Ball design and a red button. Tomo had a sleeveless black jacket with a big blue stripe across the middle, a white t-shirt, a dark green headband, black and white trainers and dark green finger-less gloves. He also had a new backpack and it was the same as Ash's.
Ash had a conversation with Mewtwo, who decided to travel around Sinnoh too.
"You must be careful after we get there." Ash advised. "Riley warned me while I was still in Rota that there have been sightings of bad people there, including poachers."
'I'll tell you right away when I spot any poachers.' Mewtwo promised before leaving.
Ash placed the Master Ball in his new backpack so he could communicate with Mewtwo in Sinnoh.
Prof. Oak had some things for Ash and Tomo. First he gave them new Pokedexes. Then he gave Ash the two Poke Balls that contained his Eevee's. 
"Gary evolved them into Glaceon and Leafeon while you were gone Ash." He said.
Ash was grateful and released his new Glaceon and Leafeon immediately. Glaceon and Leafeon were happy to see Ash again and they hugged him. Tracey thought they were really cool Pokemon. Tomo liked the look of Glaceon and hoped he would get one in the future.
Ash used his new Pokedex to check Glaceon and Leafeon out.
"Glaceon, the Fresh Snow Pokemon and one of Eevee's evolved forms. As a protective technique, it can completely freeze it's fur to make it's hairs stand like needles."
"Leafeon, the Verdant Pokemon and one of Eevee's evolved forms. Just like a plant, it uses photosynthesis. As a result, it is always enveloped in clear air."
In addition to knowing Tackle, Tail Whip, Sand Attack, Quick Attack, Bite, Take Down, Swift, Headbutt, Iron Tail, Shadow Ball, Dig, Double Team, Protect, Secret Power and Attract Glaceon also knew Icy Wind, Ice Fang, Ice Shard and Mirror Coat. In addition to Tackle, Tail Whip, Sand Attack, Quick Attack, Bite, Take Down, Swift, Headbutt, Iron Tail, Shadow Ball, Dig, Double Team, Protect, Secret Power and Attract Leafeon also knew Razor Leaf, Synthesis, Magical Leaf, Giga Drain and Grass Whistle. Ash was happy with his new Pokemon.
Then he scanned Riolu.
"Riolu, the Emanation Pokemon and the pre-evolved form of Lucario. The aura that emanates from it's body intensifies to alert others if it is afraid or sad."
Riolu knew the moves Quick Attack, Foresight and Endure and the egg moves Blaze Kick and Sky Uppercut. And it also knew Bullet Punch and Aura Sphere. This was unusual because Riolu only learned Aura Sphere after evolving into Lucario; this was a special Riolu and Ash was happy with it.
Shinx was scanned next.
"Shinx, the Flash Pokemon. All of it's fur dazzles if danger is sensed. It flees while the foe is momentarily blinded."
Shinx was male and he knew Tackle, Leer, Charge, Bite, Spark and the egg moves Ice Fang, Fire Fang and Thunder Fang.
Next was Budew.
"Budew, the Bud Pokemon and the pre-evolved form of Roselia. Over the winter, it closes it's bud and endures the cold. In spring, the bud opens and releases pollen."
Budew was female and she knew Absorb, Growth, Water Sport, Stun Spore and Mega Drain as well as the egg moves Razor Leaf, Leaf Storm, Extrasensory and Synthesis.
Finally it was Piplup's turn. 
"Piplup, the Penguin Pokemon. Because it is very proud, it hates accepting food from people. It's thick down guards it from cold."
Piplup was male and he knew Pound, Growl, Bubble, Water Sport, Peck, Bide and Bubble Beam along with Steel Wing. This was unusual because Piplup doesn't learn Steel, it's final evolution Empoleon does. Like Riolu, this Piplup was special.
Ash was happy and couldn't wait to start training his new Pokemon. With all of today's preparation complete, Ash and Tomo were ready to head to Sinnoh tomorrow.
The next day
They were ready to head off in their new outfits. Delia, Tracey and Prof. Oak wished them lots of luck.
"Send back cool new Sinnoh Pokemon for me to study you two." Prof. Oak said.
"You two be careful now." Delia said. "And I will have the cabinet ready when you come back with your gym badges and contest ribbons."
Ash found out from Prof. Oak that contests were held in the Sinnoh region. He was going to participate in them in addition to challenging the gyms. 
"See ya." The two brothers said goodbye to everyone and set off with Pikachu, Riolu and Growlithe to catch a ship bound for Sinnoh.
Now it was time for the Ketchum brothers to begin a new Pokemon journey.