Nana Maru San Batsu

Nana Maru San Batsu (ナナマル サンバツ, lit. "7 Right, 3 Wrong", also known as 7O3X) is a manga series by Iqura Sugimoto. An anime series adaptation by TMS Entertainment began airing from July 4, 2017.

Plot
Shiki Koshiyama is a book-loving boy who joins the quiz club at the urging of Mari Fukami, a girl who is an experienced quiz competitor.