Seiken Tsukai no World Break

World Break: Aria of Curse for a Holy Swordsman (聖剣使いの禁呪詠唱ワールドブレイク, Seiken Tsukai no Wārudo Bureiku, lit. "Holy Swordsman's World Break") is a Japanese light novel series written by Akamitsu Awamura and illustrated by Refeia. SB Creative has published twelve volumes since November 2012 under their GA Bunko imprint. A 12-episode anime television series adaptation by Diomedéa aired between January 11 and March 29, 2015. A manga adaptation began serialization in Kadokawa Shoten's seinen manga magazine Comp Ace from June 2014. A game adaptation by the Japanese company ASOBIMO has also been released

Plot
The story follows main protagonist, Moroha Haimura, who is unique in that he has awakened memories of two past lives: Flaga, a swordmaster and prince of a small country, and Shu Saura, a magician and King of the Netherworld. This gives Moroha the abilities of both a Shirogane and Kuroma. At the Academy he meets Satsuki, a boisterous girl who is very boastful and brash and who was Sarasha, Flaga's sister, in her past life; and Shizuno, a calm and levelheaded girl, who was Shu Saura's queen. With his unique abilities he joins the Striker Unit, Akane Academy's team of elite Saviors.

Moroha's plans for a peaceful school life go up in flames when Satsuki and Shizuno begin to vie for his attention and matters only get worse when Metaphysicals start appearing.

Official

 * http://ga.sbcr.jp/sp/warubure/index.html