Niki used to be an idol who also worked as a chef. He has been trained in cooking by his father since a young age. He has an overall chipper personality. He might scold his close friends when they do something irresponsible. Normally though, he has a friendly atmosphere about him and feels easy to talk to with his mischievous voice. He used suffer from an unexplained chronic disease that made his intestines less able to absorb nutrients than ordinary people.