Month one;
Day one, seven AMLife on the battlefield was never "happy". Nobody enjoyed killing the vampires and Four Horsemen of John, nobody enjoyed fending for their lives every day, nobody enjoyed the feeling of blades glide across their skin, or being plunged into their body so hard you wonder if that would be your last minute with a steady heartbeat. Nobody wanted to be there, shedding blood every chance you get. But the brave soldiers would still race into battle, their swords wielded and ready to swing. Nobody joined the army to be happy, comfortable, they joined for vengeance. They joined because they had lost something to the vampires, something special, and they wanted to take something from them too, even if that thing is their own life. Every man, every single one of them ran together into their own death-wish thinking the same thing; all I want is to see humanity stand strong and happy again. That's what the goal was, to destroy the threat, and then rebuild what they once had.
But when you're in the middle of a garden of destruction and all you have is a sword, your comrades, and your hatred... It was easy to lose track of the goal and just rip out the throat of whom had wronged you. And everyone knew that losing your sanity and an all-out outrage was the worst thing you could do while going face to face with the vampires, as they were much stronger than the absolute most power you could obtain, so the only possible way to kill the blood-sucking monsters was to depend on the will of demons, using their power as your own.
Or at least, that's what Yurichiro thought, but if that information was valid or not, he did not know.
However, what he could say with certainty is that he was exhausted. Exhausted from all the running and screaming he had done today, of swinging his delicate arms with much power has he swung his sword at the enemy. But did he slow down? Of course not. He pushed himself on as he propelled his upper body backward as a blade sliced through the air where his head was just a second earlier, only a few centimeters from his nose. He almost tripped backward but, with a second or two of struggling, he was back on his feet and sprinting towards the enemy vampire.
Slice.
Yuu watched for a second as the creature disintegrated into nothing more than ash before he leaped away with the rest of his squad after they had each stolen the lives of their opponents. That whole ordeal was just quick slaughtering of a few petty low-level vamps that happened to be in the way of their destination; a few miles east was the others of the Imperial Moon Demon Company fighting a group of nobles. No, he did not know which ones or how many..., but that was not important when his friends needed him. How tired he was is irrelevant, he had to push himself if he didn't want to lose his family again.
They ran past the destruction and dried blood, through the fallen building and on what was left of the roads, occasionally stopping to fight and kill passing vampires. It was a long-distance on their tired feet, but they were strong. They had done this a million times before, and they could do it this time.
When Yurichiro turned the corner into the sight of the battlefield, his squad trailing just behind him, he was met with the sight of many strong-looking vampires, a few of which he had seen or even battled with before, clashing swords with Guren and his squad, along with a few people he didn't recognize. Maybe it would have been scary to some, but Yurichiro had seen his fellow soldiers fighting with creatures far stronger than themselves plenty of times before. So, as if it was a natural reaction, he leaped into battle with the other humans fighting without taking a second thought.
A small girl with short purple hair is who he targeted, his cursed gear out and swinging. He had seen her before when he and his defenseless squad were confronted with Crowly and his two followers, she was one of them. He thinks somebody once mentioned that her name was 'Chess'..., but he could not say for sure.