On board the train to Tokyo to meet her boyfriend Shoji, Nana Komatsu ("Hachi") happened to sit beside Nana Osaki who was traveling to Tokyo to fulfill her dreams of becoming a musician. The vocalist for her punk band "Blast", Nana aims for a major debut for "Blast" in Tokyo where her boyfriend, Ren, is the guitarist for a popular band "Trapnest". Sharing the same name "Nana", both girls quickly form a bond of friendship. Their paths cross again when they encounter each other while searching for accomodation in Tokyo. Eventually they decide to live together in the same unit and this further strengthens their bond as the two "Nana(s)" go through their love lives and career. 小松奈奈(宫崎葵饰)前往东京,希望能与男友多点见面。在火车上,她刚好坐在新晋摇滚主音大崎娜娜(中岛美嘉饰)身旁。二人于东京车站各走各路,但命运叫她俩因争夺同一层房子而再遇,还成为了同屋主。虽然性格...