1x119 - Pokémon Horizons

Briar gathers Liko and the others to tell them about Terapagos' secrets and her theory for how the Rakulium can be purified. After hearing what she has to say, Roy wants to leave Blueberry Academy immediately. Seeing this, Kakitsubata suggests they have a Pokémon battle first, and while Roy is initially hesistant, Liko and the others successfully encourage him to engage in this rematch...!