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Dae Ho, who became an orphan at the age of 13, was adopted by his father's friend. However, Dae Ho in adulthood knew nothing about the relationship between men and women. Aunt and sisters decided to give pure Dae Ho a secret class

The star of a male idol group who has a cold demeanor, yet has no control on his fading fame and popularity. And an idol with a harmless and childlike cutesy personality on cameras, and a completely opposite persona off-stage... They're sworn enemies