A Certain Magical Index, Vol. 29 (Manga)

Concerned for England’s future, the second princess of the British royal family, Carissa, launches a coup d’état! The first obstacle on her road to power--her younger sister, Vilian. However, before she can put her plan into motion, Acqua of the Back, member of God’s Right Seat, stands in her way!!

Kazuma Kamachi is a Japanese light novel author and creator of the massively popular series, A Certain Magical Index, its sequel, A Certain Magical Index: New Testament, and a manga adaptation, as well as two spin-off manga series, A Certain Scientific Railgun and A Certain Scientific Accelerator.