WaterShuriken
"I..I..Iron Tail, Pikachu."
With Aah vs Kukui lasting three episodes. That leaves about 4 episodes to wrap up. Four episodes shared between classmates to clean up and to lead them to their new goals should suffice.
1) Finding Mohn (Lillie)
With Naganadel able to open Ultra Wormholes at will, Lillie asks for a favor in finding her dad. Nebby shows up during their search. They find Mohn.
2) Greetings and Goodbyes (Ash, Lillie, Mallow)
Lillie and Mohn ativate Magearna.
Ash says goodbye to Naganadel.
Such intense gratitude causes Gracidea flowers to floom.
Mallow says goodbye to Shaymin.
Team Rocket says goodbye to Bewear and Stufful as they are summoned back to Kanto.
3) School Graduation
The kids graduate from school.
Chairman Rose comes to meet the Alolan League Champion and invite him to Galar.
Everyone reveals their goals.
Ash will head back home to rest before heading out on his new journey.
Lillie and Gladion will go on a world cruise with their parents as a family to bond and reconnect.
Kiawe will head to Kanto to partake in the Indigo League.
Lana will also head to Kanto but to study under Misty for a bit.
Sophocles will stay in Alola working with the Aether Foundation to help build inventions for the sake of bettering the lives of people and Pokémon.
Mallow wants to head to the Kalos region to meet with Seibold the famous chef.
4) Kanto Episode
Ash, Delia, Oak, Rotom, Lana, and Kiawe arrive in Pallet Town. A bunch of Ash's old friends were there to congratulate him on his win.
TR gets their new assignment. Bewear and Stufful followed them. Bewear leaves Stufful in their care so he can grow big and strong and heads back to Alola.
1) Finding Mohn (Lillie)
With Naganadel able to open Ultra Wormholes at will, Lillie asks for a favor in finding her dad. Nebby shows up during their search. They find Mohn.
2) Greetings and Goodbyes (Ash, Lillie, Mallow)
Lillie and Mohn ativate Magearna.
Ash says goodbye to Naganadel.
Such intense gratitude causes Gracidea flowers to floom.
Mallow says goodbye to Shaymin.
Team Rocket says goodbye to Bewear and Stufful as they are summoned back to Kanto.
3) School Graduation
The kids graduate from school.
Chairman Rose comes to meet the Alolan League Champion and invite him to Galar.
Everyone reveals their goals.
Ash will head back home to rest before heading out on his new journey.
Lillie and Gladion will go on a world cruise with their parents as a family to bond and reconnect.
Kiawe will head to Kanto to partake in the Indigo League.
Lana will also head to Kanto but to study under Misty for a bit.
Sophocles will stay in Alola working with the Aether Foundation to help build inventions for the sake of bettering the lives of people and Pokémon.
Mallow wants to head to the Kalos region to meet with Seibold the famous chef.
4) Kanto Episode
Ash, Delia, Oak, Rotom, Lana, and Kiawe arrive in Pallet Town. A bunch of Ash's old friends were there to congratulate him on his win.
TR gets their new assignment. Bewear and Stufful followed them. Bewear leaves Stufful in their care so he can grow big and strong and heads back to Alola.