Idol group INFINITE's leader Sunggyu will be one of the guests starring on the 'Weak Men' special of variety show 'Happy Together 3'.

Sunggyu already took part in the recording for the episode, during which he denied that he was a 'weak man' at first. However, a photo was revealed on set that the idol himself could not deny. Becoming quite embarrassed by the photo, Sunggyu brought laughter as he admitted his defeat and confirmed that he is weak.

During the same recording, Sunggyu also spoke about coming to Seoul by himself after graduating high school to fulfill his dreams of becoming a singer. He also discussed his packed schedule he had as a trainee, and revealed, "I had confidence in myself to succeed by singing, and that is what kept me going through the hardships."

This episode of 'Happy Together 3' featuring guests Sunggyu, Lee Yoon Suk, and Yang Sang Kook, will air on January 31st at 11:15pm KST!