Jangjun is cheerful, carefree, clumsy plus naive sometimes when his brain cell did not work properly or didn't connect to each other. He just like being him rather being someone else. People found him childish and innocent because of his face (which he not actually lol xD that's a very a wrong fact about himself). If you asked him what the thing he like the most is eating a lot of food~ He will eat anything as long it is not wood, metal, soil, stone or whatever that a human being can not eat. Jangjun doesn't easily open up to his own feeling to anyone. If he could bring his feeling and secret into the grave, he will do it as long noone know about it. Sometimes people wouldn't get what he was thing in his brain because he always brush them off if their dare asking him. So good luck to know Lee Jangjun *wink*