A giggly, giddy AV idol (porn star) who shares a boarding house with Blast and Miu. Her real name is Asami Matsumoto. She is dating Nobu, though because Nobu still has feelings for Nana Komatsu, Yuri dislikes and is jealous of Hachi. Yuri was a teenage runaway before she starred in adult videos, and she has financial problems due to her sleazy manager and her own fickle nature. She has a large advance to pay off and is almost done paying it all off.

Two twenty-somethings seemingly share nothing in common apart from their first name, but a chance meeting on a train bound for Tokyo sets Nana Komatsu and Nana Oosaki on a collision course with destiny. Nana Komatsu, a love-at-first-sight dreamer, aims to find enduring happiness in the big city. Nana Oosaki, neo punk rock vocalist, pursues her burning ambitions of musical stardom and worldwide fame. As their fates increasingly intertwine, they each chase their dreams — until the harsh realities of life in big city Tokyo threaten to tear everything apart. 
 
(Source: Sentai Filmworks)

Nana Komatsu is a young woman who's endured an unending string of boyfriend problems. Moving to Tokyo, she's hoping to take control of her life and put all those messy misadventures behind her. She's looking for love and she's hoping to find it in the big city. 
Nana Osaki, on the other hand, is cool, confident and focused. She swaggers into town and proceeds to kick down the doors to Tokyo's underground punk scene. She's got a dream and won't give up until she becomes Japan's No. 1 rock'n'roll superstar. 
This is the story of two 20-year-old women who share the same name. Even though they come from completely different backgrounds, they somehow meet and become best friends. The world of Nana is a world exploding with sex, music, fashion, gossip and all-night parties. 
(Source: Viz Media)
 
Note: Winner of the 48th Shogakukan Manga Award in the Shoujo Category in 2002.