Sunwoo: I am 24 years old and single.
Dori: I am over 2,000 years old and single.
In an ancient city, a group of little demons who never see the light of day are suppressed. Sun Woo, an orphan, a graduate student in the Department of Philosophy, is tall, handsome and has a natural affinity. In fact, he is taciturn and does not like to socialize. He believes that people are born lonely. Because of a book "Monster Guide", he accidentally got involved in a fight with monsters. Human nature has good and evil, and demon nature also has good and evil. What happens when the good and evil of human nature meets the good and evil of demonic nature? Accompanying him is Dori, who is extremely capable, sultry and affectionate. The two decided to face this unknown adventure together and protect the justice and peace of Kyoto. When the truth surfaced, Shan Yu discovered that everything was actually...
Concept: Life is lonely, loving you means staying with you