The Perfect Hybrid summary: Several years ago, extraterrestrial beings penetrated Earth's borders, but peace was eventually regained, thanks to supernatural humans who unveiled themselves during the invasion. Gwangik Yu, our main character, is the offspring of two supernatural beings. His father is immortal, whereas his mother can transform into beasts and possesses extraordinary physical gifts. Neither of his parents is conscious of the other's abilities and both expect Gwangik to pursue their chosen paths.