Exorcist wa Midara ni Aragau

In a world where evil spirits and Ykai have become a societal problem, there are "Exorcists" who struggle day and night to exterminate these creatures for world peace. In this world, a 15 year old boy named Mashiro is the leader of a certain exorcist unit. This unit is full of beauties but... They always lose and need to be rescued by him. Will Mashiro be able to make these girls into full fledged Exorcists!?