Machigatta Ko O Mahou Shoujo Ni Shite Shimatta Vol. 2

In an attempt to save the world from a threat to mankind, high school girl Majiha Kayo is turned into a magical girl. Despite her cute appearance, though, she may have been the absolute worst choice! The curtains rise on this anti-magical girl tale by Souryu!
Majiha Kayo has been given magical girl powers to protect the world from its greatest enemy, but after a great blow to Atasunmo, a new foe appears in the form of a magical girl of irreproachable conduct and a strong sense of justice?! The action continues in volume 2!
Notice: This manga is written in Japanese.