NANA Season 1 Sachiko, Is This on Purpose?

Nana Osaki is a guarded and ambitious young woman with a strong will and a rough past. She is the vocalist for a punk band called Black Stones and she desires fame and recognition more than anything else. Nana Komatsu is an outgoing and flighty young woman with a weak will and a stable past. Her life revolves around her desire to find love and marriage. The two meet for the first time while traveling to Tokyo - in pursuit of their respective dreams - and they later decide to be roommates. Although drastically different people, the two become very close and together they find out if their biggest dreams have room for their best friend.