The idol said, "It's my first time officially releasing a mini album and I'm really happy that it's received such attention but in a way, there's pressure. It's my first time going solo after being in a group so the pressure is quite big." 

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He continued, "During my hiatus, I tried acting and also prepared my album. I officially started preparing for it about one year ago. I spent my days taking lessons and producing."

Thunder's first mini album will be released December 7 at midnight (KST).