| 7O3X Fastest Finger First | |
 Cover of the first volume featuring Mari. | |
| ナナマル サンバツ (Nanamaru Sanbatsu) | |
|---|---|
| Genre | Comedy, sports (quiz bowl) |
| Manga | |
| Written by | Iqura Sugimoto |
| Published by | Kadokawa Shoten |
| Magazine | Young Ace |
| Demographic | Seinen |
| Original run | 2010 – 2020 |
| Volumes | 20 |
| Anime television series | |
| Directed by | Masaki Ōzora |
| Produced by | Marina Sasaki Takeshi Yamakawa Motohiro Oda Daisuke Masaki |
| Written by | Yuuko Kakihara |
| Music by | Hajime Hyakkoku |
| Studio | TMS Entertainment Double Eagle |
| Licensed by | Crunchyroll |
| Original network | Nippon TV (AnichU) |
| Original run | July 4, 2017 – September 19, 2017 |
| Episodes | 12 |
Nana Maru San Batsu (ナナマル サンバツ, lit. "7 Right, 3 Wrong", also known as 7O3X), called Fastest Finger First in English, is a Japanese manga series by Iqura Sugimoto. An anime television series adaptation by TMS Entertainment aired from July 4 to September 19, 2017.