His debut manga was Sannen Kimen-gumi, published in Weekly Shōnen Jump beginning in 1980. After Sannen ended in 1982, he began publishing Highschool! Kimen-gumi, also in Weekly Shōnen Jump, until 1987. Highschool was a smash hit, and an animated version was begun in 1985, running for two years on Fuji TV, along with a movie in 1986 and two video games. His next manga series was I'm Shitataka (僕はしたたか君 Boku wa Shitataka-kun?), which ran from 1988 through 1990. After Shitataka, Shinzawa took a break from publishing manga until 2001, when his current series, Flash! Kimen-gumi began.
- Gombos, Michael. "Michael Gombos' Top 9 Manga". About.com. Retrieved March 26, 2010.
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