Mun-yeong begins teaching a literature class at OK Hospital. In her first lesson, she provocatively claims that fairy tales are not "hallucinogens" for hope, but "stimulants" designed to make people face the brutal reality of the world.
"A fairy tale isn't a hallucinogen that gives us hope and dreams. It's a stimulant that makes us face reality" — Ko Mun-yeong. It’s Okay to Not Be Okay Episode 3
Mun-yeong returns to her desolate childhood home, a mansion filled with "ghosts" of her mother and past trauma. She experiences a terrifying nightmare where she is paralyzed by a dark entity, only finding relief by imagining Kang-tae using the "butterfly hug" technique to calm her. Mun-yeong begins teaching a literature class at OK Hospital