JK Yakuza: Conquering the Warring States Period!

Maria Himuro, a bullied student at an elite girls' academy, is hiding her true identity as the daughter of the boss of the Himuro Group, a powerful Yakuza organization. After her father is attacked, Maria inherits his position as boss, but she soon gets caught up in a mysterious explosion that sends her back to the Warring States period. There, she meets none other than Oda Nobunaga, who aims to unify the country under his mighty rule.

Original Webtoon:
Cmoa, JumpToon

Official Translations:
English, T.Chinese