The Exorcists of the Black Order, Lavi, Allen Walker, Kanda Yu, and Lenalee Lee aim to stop the Millenium Earl from cleansing the Earth by means of destroying it.
The series’ main character, Allen Walker, has the ability to control “Innocence”, a weaponized form of a divine substance from ages past. Allen proves to be an important companion thanks to his cursed eye, which is able to detect the Akuma who walk along side humans.
It’s rare to find a nice group cosplay. I’m not familiar with this anime though, so I’m wondering why Lenalee isn’t wearing her hair in pigtails here? Or maybe the angle of the photo.