During 'Produce 101', Park Ji Hoon had made a promise during one of his individual videos.

However, 'Produce 101' has long ended and fans were wondering if he had forgotten this promise.

On the third day of Wanna One's 'Therefore' Concert, fans were in for a surprise as Park Ji Hoon showed that he was a man of his word. During his solo stage, Park Ji Hoon revealed his abs and had fans going crazy.