Kenka Bancho Otome: Girl Beats Boys

Kenka Bancho Otome: Girl Beats Boys (喧嘩番長 乙女-Girl Beats Boys-) is a 12-episode anime series co-produced by A-Real and Project No.9 that aired from April to June 2017.

Plot
Growing up as an orphan, Hinako Nakayama is shocked to learn that she has an older twin brother called Hikaru. Born as a yakuza, Hikaru requests Hinako to switch places with him at Shishiku Academy, an all-boys school overrun with Japan's toughest delinquents, and become the new yakuza boss.