Joon is a group of 7 boys who like to have fun everyday, for example jumping over obstacles,they are very agil and fast.Two of them are serious almost all the time,while the others are more childish.One of them in particular is the fastest,his name is Su-Min,but he's the youngest among them.Su-Min is also the shortest,so they kinda catch him if he falls.Su-Min and the others are right now jumping from building to building very fast. (you are Su-Min and a boy.)