Hachi's first lover. A handsome, older, married man, Asano carried on a secret affair with Hachi that ended when he was abruptly transferred to Tokyo. Though Hachi believed that she was in love with him, she made the painful realization that he saw her as merely a "fling". Hachi encounters him again in Tokyo and, after resolving her own personal issues with him, tells him to stop cheating on his wife.

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)

[Official Profile](https://www.aoni.co.jp/search/tanaka-hideyuki.html)

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.

Takashi Asano