Summary
The complex of the boy Choi Siwoo is being overweight Choi Siwoo runs and runs around his house until past midnight and he encounters an old man on a walking trail In the blink of an eye the old man covers Choi Siwoo with the straw backpack he is carrying Where Choi Siwoo had stumbled upon was an enormously wide ruined traditional Korean house hanok
At the edge of the spacious courtyard surrounding him on the courtyard there were numerous black shadows standing To the bewildered Choi Siwoo the old man speaks Once every 666 years a ceremony is held to select the king of Yokai and each Yokai in this world possesses one entry ticket for it And Choi Siwoo is in fact a hybrid of a human and a goblin inheriting the blood of an extinct goblin Among the goblin folk only Choi Siwoo possesses the entry ticket As the sole survivor inheriting the blood of a goblin the adventure of the halfmonster boy Choi Siwoo begins