This is based off an anime called Seiken Tsukai no World Break.

This takes place in a private high school involving the concept of "saviors." They are known as people who possess awakened memories of their past lives.

At the school, there are two types of people: Saviors, who fight enemies with weapons and techniques gleaned from the Puraana powers from their own bodies, and Kuroma, who wipe out enemies with magic to manipulate the Maana powers that surpass physics. Yuri Kwon, attends this private school, however Yuri is the first person to possess the past lives of both Saviors and Kuroma.

credit:http://myanimelist.net/anime/22663/Seiken_Tsukai_no_World_Break

credit:https://36.media.tumblr.com/f03c5a211fff1392d83bfa04047209e7/tumblr_nir3rgpkLi1s307p6o1_500.png