February 21, 1965
|Cromartie High School|
(archived on May 1, 2012)
His most popular serial, Cromartie High School, ran in Weekly Shōnen Magazine from 2001 to 2006. The serial won Eiji the 2002 Kodansha Manga Award in the shōnen category. In 2003, it was a jury selection in the seventh annual Japan Media Arts Festival. That same year, an animated series based on the serial premiered on TV Tokyo. A live-action feature film, called Cromartie High – The Movie, followed in 2005. A spin-off sequel titled Cromartie Kōkō Shokuinshitsu ("Cromartie High School Staff Room") debuted on October 27th 2018 on Kodansha's Magazine Pocket app. Nonaka authored the manga while the art was drawn by Ino Ichiban.
Kodansha republished the serial in 17 paperback volumes (tankōbon). From 2001 through 2006, they released two or three volumes per year as the story progressed. ADV Manga published English translations of the first 12 volumes in 2005–2007; the first four of these were nominated for a 2006 Eisner Award in the category "Best U.S. Edition of Foreign Material".
Although Eiji usually illustrates his own work, his shōnen serial Double-J (2009) is illustrated by Maru Asakura (亜桜まる). Double-J was adapted into an animated miniseries, which aired on Nippon TV in 2011.
- Super Baseball Club (1991)
- Charge!! Cromartie High School (魁!!クロマティ高校 Sakigake!! Kuromati kōkō) 
- Mechasawa-kun (メカ沢くん) 
- Future Neighborhood Association (未来町内会 Mirai chonaikai) 
- Double-J (だぶるじぇい Daburu jei) 
- The Toughest! FANTA: Legend of a Band (最強!FANTAバンド伝説 Saikyō! FANTA bando densetsu) 
- Cromartie High School Staff Room (クロマティ高校 職員室 Kuromati Kōkō Shokuinshitsu) 
- The Life and Times of an Idiot Section Chief (課長バカ一代 Kachō baka ichidachi) 
- Dream Mechanic (ドリーム職人 Dorīmu shokunin) 
- Cactus (しゃぼてん Shaboten) 
- The Life and Times of an Idiot Section Chief for Children (課長バカ一代 子供用 Kachō baka ichidachi kodomoyō) 
- Feather Duster (ハタキ Hataki) 
- Red Sky, White Sea (赤い空 白い海 Akai sora shiroi umi) 
- Joel Hahn. "Kodansha Manga Awards". Comic Book Awards Almanac. Archived from the original on August 16, 2007. Retrieved August 21, 2007.
- "Jury Selections: Sakigake! Cromartie High School". Japan Media Arts Festival Archive. Agency for Cultural Affairs. Retrieved March 17, 2016.
- Ressler, Karen (October 5, 2018). "Cromartie High School Manga Returns in 'Spinoff Sequel' Manga". Anime News Network. Retrieved October 25, 2018.
- "2006 Eisner Nominations". Anime News Network. April 5, 2006. Retrieved March 17, 2016.
- Sands, Ryan (April 19, 2007). "New series from Cromartie's Eiji Nonaka". Same Hat!. Retrieved March 18, 2016.