Battle Girls: Time Paradox

Yoshino Hide is an average girl who frequently gets into trouble due to her clumsiness. While visiting a local shrine to pray for success on her upcoming test, Yoshino disrupts a mysterious person's magic spell, causing it to spiral out of control and sending her back in time to the Sengoku Era. Upon arrival, she finds herself in a world where everyone is female, including notable figures like Akechi Mitsuhide and Oda Nobunaga. Yoshino decides to help Oda Nobunaga locate the Crimson Armor, said to grant the wearer the power to conquer Japan.