Departing from their respective hometowns, two young women with identical names are brought together in their pursuit of new beginnings. With their hearts set on going to Tokyo, Nana Komatsu dreams about blissful love, while Nana Osaki aims for a successful music career. The former has a cheerful and friendly nature, but her naivety has steered her romantic life astray until she meets her dependable boyfriend—Shouji Endo. Without letting herself be dismayed by Shouji's decision to study in Tokyo, Nana works hard to earn enough money and follow him there. Meanwhile, her namesake is a solitary punk vocalist whose impassioned romance with her band's bassist, Ren Honjou, comes to a sudden end. Though heartbroken, Nana bravely looks forward and travels to the capital with the ambition of becoming a recognized artist. Shortly after they arrive in Tokyo, the girls cross paths again due to an unexpected coincidence that ultimately leads them to live under the same roof. As they grow closer, the two strive to support one another amid their struggles to forge a future for themselves. 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. The two completely different girls who share the same name; Oosaki Nana and Komatsu Nana (Hachi) meet on a train to Tokyo. Oosaki Nana leaves her band ‘BLAST (Black Stones)’ to become a pro musician and Hachi moves to Tokyo to be with her boyfriend, Shouji. Girls encounter each other while looking for the same apartment, and they decide to live together. From that moment on, they face the hardships and good things of the life together…