B1A4's leader Jinyoung fights enteritis.

It has been revealed late that during the filming of the music video for B1A4's follow-up song 'Only learned the bad things', Jinyoung was running a high fever and had stomache pains but bore with it and completed the filming.

The filming of the music video took place amidst the busy promotions of their title song, O.K, at Gangnam and studios at Gyeonggi-do. In this music video, B1A4 member Baro plays the role of a blood type B bad boy. After the shoot, Jinyoung was sent to the hospital due to fatigue and was diagnosed with acute enteritis.

B1A4's representative said, "Jinyoung's has a manly and trustworthy character and he doesn't like people around him to worry. It's his style to bear with it alone even if he is sick. Since he is the leader, it seems like he felt more responsibility and tried harder not to show signs of being sick during the shoot."

T/N: This happened during the MV shoot which was about a month ago and Jinyoung is all well now