Dark Knight (ダークナイト)

This story tell about a Fourteen year old Hiroki and other teenaged people about their normal everyday lives and then are taken to a camp to become a Dark Knight. But as months past, Hiroki finds out a secret of the training and all the weaponry. Hiroki helps boys and girls escape the camp, but it was too late. They were brought to a battle and he had to do something to survive. How can he survive the battle and save some friends and hope they won't get injured and make their way back home.