Two of the more frequent places frequented by students at GenkiJACS are Ippudo and Ichiran. Ichiran features a unique setting- everyone eats in their own booth (i.e. not an ideal place for a date or lively conversation) and they order their ramen according to a list of specifications, including the amount of fat and the thickness of soup (don`t worry, they also have an English sheet). These two places are located near the school in Tenjin.
If you want to sample a whole variety of ramen, the shopping mall Canal City has a sort of ramen-world on the top floor. So much ramen!!