Seijo Seisen: Taizai Yuusha to Omoide no Majo

There are 13 chosen saintesses. Only one can survive! Toma Kurashiki, who took his own life after failing to save the woman he loved, is asked to be reincarnated and serve as a Hero. However, sensing a fundamental difference in their concepts of justice, Toma rejects the summoner and instead joins forces with Adel, a Saintess branded as a witch. Adel reveals the shocking truth to Toma: a "The Holy Maiden's Holy War" is underway, a brutal battle in which the 13 Holy Maidens must kill one another until only one remains.