Singer Heo Young Saeng shows off his unexpected relationship with Go Ah Ra.

On January 4th he posted on his Twitter "I went to the premier of Ah Ra's movie "Pace Maker". It was really fun. I hope the movie does well. Thanks for the invite", along with a photo.

In the revealed photo, Heo Young Saeng and Go Ah Ra are standing closely with 'V' signs. The two catches the attention with the slightly look-alike appearances.

Netizens who saw the photo commented "friends with actress Go Ah Ra? unexpected", "looks like friendly siblings", "I want to watch the movie soon!", and etc...

Photo Credit: Heo Young Saeng Twitter