Singer HaHa wished his closest senior, Kim Jong Kook, a happy birthday.

On the 25th, HaHa shared on his Twitter, "My hyung! I'm wishing you a really happy birthday. You are the best! I love you from the bottom of my heart!" He also shared a photo taken with Kim Jong Kook.

The two are seen wearing clothes appropriate for the summer with matching bandages wrapped around their legs. Kim Jong Kook's funny facial expression along with HaHa's bright smile warmed the hearts of his Twitter followers.

Kim Jong Kook and HaHa have been participating together in SBS's 'Running Man' for over a year. HaHa was also known for his "follow Kim Jong Kook" gags on the variety show 'X-Man' in the past.

Source + Image: HaHa's Twitter