This is the first mainline Pokémon anime (excluding web-series, spin-offs and theatrical movies) to not include Ash Ketchum as a protagonist, to not include Team Rocket as antagonists, to not include Ash's old friends (Misty, Brock, Tracey, May, Max, Dawn, Iris, Cilan, Serena, Bonnie, Clemont, Kiawe, Lana, Lillie, Sophocles, Mallow, Goh and Chloe) as the supporting protagonists, and to not include Delia Ketchum, Professor Oak and Gary Oak as the supporting characters.
"Pokémon Horizons: The Series" is the 26th season of Pokémon anime series.