10 Years ago a war broke out between "Humans", "Angels", and "Dark Angels" causing tremendous casualties and sorrow only to be stopped by "Soldiers". Since then, academies all around have formed to prevent such a tragedy from breaking out again by training students to master their natural born gifts and eventually move on to "Soldier". This story follows Ryuuji Usheta and his two siblings: Senji & Minori as they each unravel deeper and darker secrets about both their pasts, and the school's true intentions.