Thanks to Acerola’s help, Ash arrives at the Ruins of Abundance, home of Ula’ula Island Guardian Tapu Bulu. Ash wants to train with Tapu Bulu to prepare for his rematch against the Island Kahuna Nanu, and after our hero demonstrates his friendship with his Pokémon, Tapu Bulu engages Ash and Lycanroc in battle—and Lycanroc learns how to use Stone Edge and Rowlet learned Razor Leaf! (Source: Wikipedia)
