At the kingdom of Thanatica.
It was a normal day. A normal beautiful day with the sun showering every devil in the kingdom with his light and basking them in his warmth, making even devils have a pure smile at this feeling. Nothing indicated about the things that would take place in a few hours, they were all happily going to their jobs, well that was what they would do if a certain king had not declared war against their kingdom.
The devils were a strange race. They used to be evil and cause chaos everywhere, but since the downfall of the demon king thousands of years ago, they decided that they could not go on with their ways and started anew. They built a new kingdom from the ashes of the previous one and tried to peacefully negotiate with the other races. There were suspicions, but seeing that the devils were a powerful race, everybody embraced their change and thought nothing of it. That was thousands of years ago and during those years the demon king got reincarnated and started rising through the ranks in order to sit on the throne again, and so he did. With his rise came the second dark age of the devil kingdom, and this time they would probably either rule the world or vanish completely from it. Through machinations and strife, they managed to dig quite deeply in all the other kingdoms and could easily eliminate all the upper echelon of each kingdom, effectively causing chaos, the chaos they would take advantage of in order to take over the continent. At least that would be the case if they did not kill King George of Beartica. Still, up to this time, nobody thought anything of the puny war that the new king had declared on them, well who would since the new king was just an immature rabbit in pretty much everyone's eyes except for his kingdom's people.
''This kid has some guts, going on war against us, the most powerful race in existence, an existence that makes even gods cower in fear'' a deep voice said while having a devilish grin on his face. He was the demon king Ouroboros, a man of 180cm in height with two horns on his head that swirled, like a goat, a goatee and a muscular upper body that would put bodybuilders to shame. His legs though were that of a goat, and to put it simply that just made him a goat-man, a title that greatly enraged him, since it put him in the same place as the likes of beastmen. Still, even though he is quite an odd of a man his power is unparalleled or so he thinks right now. He is a magic saint with the attribute of fire, making him a war machine on the battlefield.
''Since it is a war he wants I shall entertain this young one and play his game, that is what omnipotent beings do after all.'' said the demon king arrogantly and ordered for a force of 100.000 men to gather and get ready for war, tomorrow they would show the world why the devils were feared in the past.
The preparations were made quite fast, showing that the devils were always ready for a war against their enemies. Still, the kingdom's atmosphere did not change in the least, showing the devils' complete faith in the abilities of their army and their king. Only one person was disturbed by how the devils were reacting and that was the daughter of the demon king, the princess Athena, a beautiful 20-year-old devil with purple hair that unlike her father was not a goat woman but a succubus, taking the traits of her mother. She is also a mage, a wind mage and she is the same rank as Arthur, an Archmage, she also studied together with Arthur at the magic academy and new that he was the prince of the beastmen, now a king, making her afraid that her kingdom is not gonna make it after this war since she had seen what Arthur can do before. This situation led her in sneaking out during the night, stealing a horse from their stable at the palace, and leaving the capital with the intention to go and meet Arthur. She hoped that he would not harm her, as for her people she did not really care, that was just the nature of the demons, cold and detached.
Like this the day gave its place to the night and night gave its place to the day again signalling the march of Arthur's soldiers with the capital of Thanatica as their destination.