9張SECRET全孝盛最性感照片

常見問題：

問：4. Q: What was Secret's debut song?
答： A: Secret's debut song was "I Want You Back," released in 2009.

問：6. Q: What is Secret's most popular song?
答： A: Secret's most popular song is "Poison," which was released in 2014 and became a huge hit in South Korea.

問：9. Q: What is the reason behind Song Ji-eun's departure from Secret?
答： A: Song Ji-eun left Secret in 2014 to focus on her solo career and acting.