once a member of idol group Red Apple, had shown his potential in season 6 of ulzzang generationonce a member of idol group Red Apple, had shown his potential in season 6 of ulzzang generationonce a member of idol group Red Apple, had shown his potential in season 6 of ulzzang generationonce a member of idol group Red Apple, had shown his potential in season 6 of ulzzang generationonce a member of idol group Red Apple, had shown his potential in season 6 of ulzzang generationonce a member of idol group Red Apple, had shown his potential in season 6 of ulzzang generation