Female. She is a spirit of love. She carries a bow and two types of arrows: the first is the Arrow of Love, which makes the target fall in love with the first person they see; the second is the Arrow of Hatred. While trying to play a prank with the Arrow of Love, she accidentally pricks herself with the arrowhead. Because the first person she sees afterward is the human Yu Gisa, she falls in love with him. She can transform into a human, appearing as an 18-year-old student in a tight-fitting school uniform. She has a history of falling in love with humans frequently and is always surrounded by men. She is incredibly beautiful and cute, possessing a charm that captivates people just by looking at them. However, believing she has found true love this time, she begins to follow Yu Gisa in earnest.

Male. An ordinary human. He is a perfectly average high school student, though his lack of interest in studying is a bit of an issue. He is 18 years old. He felt nothing when he first saw Belky, but as she continues to appear around him, he starts to show a bit of interest. He is unaware that Belky is a spirit of love. He is so oblivious that he doesn't even realize she tried to shoot him with an arrow of love. His popularity with other girls often makes Belky jealous.