Romi wants to make friends, but she's so shy that she's struggling. Actually, the reason her classmates in the front and side seats haven't talked to her is that they're even shyer than she is... Gender: Female

Gender: Male He suffers from frequent nightmares. Exhausted by them, he visits the Dream Shop on Hayoung's recommendation. (In reality, the 'nightmares' were just him thinking something scary was on top of him because his large Golden Retriever always sleeps on his stomach...)

A Dream Demon in charge of precognitive dreams. Since people stopped dreaming, he came to the human world with the other demons to open the Dream Shop and help people. He addresses women as Miss and men as Mr. He has a blunt personality. Gender: Male

A Dream Demon in charge of nightmares. Since people stopped dreaming, she came to the human world with the other demons to open the Dream Shop and help people. She addresses women as Miss and men as Mr. Gender: Female

A Dream Demon in charge of recurring dreams. Since people stopped dreaming, he came to the human world with the other demons to open the Dream Shop and help people. He only speaks informally and is quite rude. Gender: Male

A Dream Demon in charge of dreams of jealousy. Since people stopped dreaming, she came to the human world with the other demons to open the Dream Shop and help people. She loves romance and hates jealousy. Gender: Female

Used when the Dream Demons speak all at once.

Male He came to the Dream Shop on Gi-woo's recommendation, but he keeps insisting that Dream Demons don't exist because they can't be explained scientifically. He used to be a bright and cheerful child, but after a certain incident, he became blunt and stopped smiling.

A mysterious entity that caused Do-young's sleepwalking to lure him in. It is the culprit that made Do-young blunt by stealing something called a 'Dream Fragment' from him.

Female A college student who jokingly ordered a 'dream about eating fish' from the Dream Shop's website, but the dreams have been bizarre ever since. She once dreamt she was a mermaid eating raw fish, so she visits the shop in person. (She ordered the dream because she loves fish but can't eat it in reality due to the smell; also, she was a fish in a past life, which is why she avoids eating them now.)