Feel So Good Volume 1

The top idol star Si-Moon Lee is in fact a very shy student who hides behind his glasses in school and at home. No one at school knows he's the Si-Moon. The real person in charge, who's actually creating all the cool images of Si-Moon is his sister, Si-Eun. While Si-Eun becomes interested in a mysterious guy at the video shop, Chi-Ee, Si-Eun's friend, slowly falls for the "real" shy Si-Moon at school.