2PM member Nichkhun revealed a picture taken with actor Ahn Sung Gi. 

On the 4th, Nichkhun posted a picture on his twitter, along with the comments, "Hello! This is my father~~~keke♥.♥"

In the picture, Nichkhun is with Ahn Sung Gi while posing for the camera. The two star's similar smiles caught the attention of fans. 

Fans have commented, "They really look like father and son" and "So handsome."