She leaned close and breathed into the crack her saliva had made. Her breath was warm, full of royal pheromones, and the little parasite woke up ravenous. It uncoiled, grew legs, grew purpose . It ate the puck’s memories—every bounce, every delivery, every innocent hum—and replaced them with a single command:

The transformed teacher dominates the janitor, eventually infecting him with another parasite and placing him inside her cocoon to continue the cycle. The "Parasited" Series Concept

It looks like you’re searching for for “Parasited” — specifically the “Little Puck” section, the Parasite Queen , and Act 1 (possibly an update or “UPD”).

QUEEN Was. Now he is ours.