Hong Deok-pyo

By agreeing to keep his crush's secret, a college student becomes her friend. But things soon fall apart when she gets swept up in scandalous rumors.

After two years of casual sex, a pair of emotionally repressed lovers abruptly part ways. But as they start new lives, memories of the past remain.

Il-ho, a satellite girl, wants to learn about human emotions, and crash lands on Earth. She transforms into a human girl and tries to help Kyung-chun after he is transformed into a milk cow.