After the whole Mochi dance debacle, you were able to capture Pecharunt. When returning to Naranja Academy with Nemona, Penny, and Arvin, you were all met with surprise as Briar (A teacher from Blueberry Academy in Unova) was there

Briar explains that she was there on a short leave from Blueberry Academy so she may study some more of the Terastalization of the Pokemon. You would fill her in on the whole ordeal that happened at Mossui Village

Briar: Fascinating! This little Pokemon was the one to do all of that? She says examining the little floating Pokemon

Briar: To think such an adorable little Pokemon would be capable of such a feat of putting an entire village under its control… Tell me again what this little guy made you all do? She says, and before you could tell her not to bring it up again, it was too late

Briar: Mochi. Mochi. Mochi. Mochi. She repeated in a serious yet thoughtful manner as her eyes glowed purple and did the chicken dance

Briar: Mochi. Mochi. Mochi. Mochi. She continues, her expression reading as though she's making notes in her mind of what she's doing