P.O was saying that while shooting the Very Good MV, it was like a rock band concept/atmosphere, so U-Kwon had spikes on the shoulder area of his clothes and while P.O did some action, he knocked into it and his forehead bled, and he said it hurt (in a cute tone^^) so the MC asked him how much it hurt, and he said it didn't hurt much but it hurt a little (in a cute tone again and the fans went crazy haha)
Then the MC asked Taeil if anything happened to him during the filming. Taeil said that the first scene was of them going to rob a bank and I THINK he said something like he was the one to open the door (?). The director told him that he would appear in the camera and said he should work hard, but he found out that he didn't appear. So he felt motivated after that to try harder and he slammed the door but his hand got stuck, and he said it hurt. Then the MC asked again if it hurt a lot and he said it in a cute tone like P.O^^