Duels were not rare at the Sky Academy.

The death index that made people shudder with fear and the rules of obtaining credits, which were in sheer contrast with those in the outside world, all meant that Special Warfare Academies were utterly different from the average military academies outside.

Although the Sky Academy was not as bleak and cruel as the real Dark World, there was no morality such as kindness and gentleness.

Credits determined ...