The boys look happy and all smiling in front of their friends, but sad and depressing at home or when they are alone. They seem to have fun when they are together but their friendship is just bunch of guys who doesn't know what do with their life. They jump and ride car, but there isn't a time when they are sharing their problems with each other. So in the end J-hope commited suicide and V killed that guy.( just an interpration, tho)