It has been an known thing in kallin community that he likes to look cool. But they make fun of him about it by saying he doesn't and looks more cute. He told that there was a picture that was his favorite and shows the image he wants to look before when the magazine feature was announced and everyone guessed it will be something cool. When I first saw the pics, I thought he would say the one with sleeveless but I was wrong. This choice is totally unexpected, there is literally nothing to see in this picture.