Reincarnated Holy Knight in the City of Sword fights

This story is set in an alternate world that is not much different from ours. Once upon a time, in a great Kingdom lived two formidable human races called the shield race and the sword race. At first they lived peacefully side by side, and they all fought together to fight against the forces of evil, but suddenly for some reason, a feud broke out between the two races that resulted in them fighting each other, and a war raged on for years. between them. Many became victims of that long battle, so the hatred between the two sides increased, and they still often fight even now, when human civilization and technological developments have become increasingly sophisticated. In modern times, where every human being already has a smartphone, cars milling about on the streets, and tall buildings lined up in urban areas. Currently, the shield race and sword race live intermingled with humans, and most of them hide their power for reasons of security, peace, and so on. Although they are a fighting race destined to fight against the forces of evil, but because they are forced by circumstances and environment, they are need to hide their true identity, so that now most of them live normally like ordinary humans. That is what happening about humans called shield race and sword race, and this story will focus on a large city called Central Town. One night, in a narrow alley, there was a drunk man walking unsteadily. The atmosphere in the place was very quiet and dark, because there was no one other than that drunk man. But suddenly someone came up to the drunk man, the figure of the mysterious person was a man with quite masculine posture, with army pants and a black t-shirt he was wearing. While walking, the man in the black shirt said. "Hey, can we talk for a bit?" "I don't want it!! Do not bother me!" Said the drunk man. But the man in the black shirt didn't want to obey, he just kept walking towards the drunk man who now looked very annoyed, so that when they were close to each other, suddenly the drunk man pushed the man in the black shirt very hard, causing the body of the man was flung far enough that he managed to land safely in a kneeling position. Apparently the two of them were no ordinary human, and they both had some kind of great power within each of them. Seeing that, the drunk man began to feel irritated, and something strange began to come out of his body, then suddenly a black shadow appeared and covered the drunk man's entire body, so that now the drunk man has completely transformed into a kind of shadow creature that scary and has yellow eyes, besides that he also has a burly posture and strong killing intent. Then while standing up, the man in the black shirt said, "Hmm, as I thought, you are a shadow demon." Without further ado, the shadow demon sped up and dealt a blow to the black-shirt man, but surprisingly, it turned out that the blow couldn't reach the man's body, because there was a kind of transparent shield that blocking the shadow demon punch, that shield appear between the shadow demon and the man in the black shirt. It suddenly made the shadow demon startled as he said. "Y-you are a shield race??" "Yes, that is true. Get out of this human body… You have made him left by his wife and children, even he has lost all his wealthy because of you!" Said the man in the black shirt. Then, after saying that, the man in the black shirt removed his transparent shield and instantly dealt a powerful blow, hitting the shadow demon's stomach, causing the demon's body to flung and crash onto the asphalt. And while the demon was wincing in pain, without wasting any time the man in the black shirt dashed towards the enemy, setting up a kind of transparent barrier that covered his fists, so that he could land various deadly powerful blows against the enemy's body. Then the shadow demon who felt overwhelmed and could not stand being beaten, began to use his abilities, he changed the shape of his hands into a kind of sharp object that could be used to injure the enemy. Then he quickly swung his hand to s***h the head of the man in the black shirt. But luckily, the man in the black shirt swiftly managed to back away and dodge, so that he only got a scratch on his cheek. But after that the demon attacked again so that there was a fierce battle between the two of them, namely a fight between sharp hands against transparent shields. And apparently the demon underestimated his opponent too much, because unexectedly, it turned out that the person who was his opponent had a very great fighting ability like a professional boxer. The man in the black shirt managed to dodge every attack from the enemy, and he even managed to throw a lot of fists at the demon's body. Until finally a final blow from the man in the black shirt managed to make the demon crash into the wall, then he fell unconcious. And after that his entire demon form was annihilated so that the drunk man could regain his body, then he fainted unconscious from exhaustion. So, because the fight at that place had ended, the man in the black shirt immediately carried the drunk man and took him away from there. That way, it means the drunk man has been saved from the influence of the shadow demon who is trying to take over his life. The next day in Central town, or rather in a modest residential area, in one of the houses, lived a teenager named Alex, and he lived with his mother. Alex is still a 2nd year high school student, while his mother is a single parent who works in a private company, so every morning she is always busy preparing breakfast for Alex and going to work. On that morning, his mother repeatedly called Alex's name to tell him to get up and go to school, but it seemed that Alex deliberately didn't answer his mother's call, even though his eyes were open, he didn't want to move and instead remained lying on his bed. Therefore, a few moments later the mother came to Alex's room, and after he opened the bedroom door, with a sigh, the mother asked. "Alex, why are you still lying down? What is it today?" asked the mother. But Alex didn't answer at all, he just kept quiet and continued his sleep. So the mother immediately said. "Hmm, you've missed school too many times. Do you want me to drag and drop you to school today?" Then after hearing those words, Alex suddenly jumped out of bed and said. "N-don't... Alright, I'll take a shower." Alex said as he walked into the bathroom. "Hmm, good… By the way why did he never want me to take him to school huh? Even though it would be faster if he took a car with me … Hmm, never mind." Said the mother. Long story short, when his mother had gone to work by car, Alex in his full uniform had now come down from his room and approached the dining table, initially he intended to have breakfast, but when he saw burnt bread and crumbled eggs on the dining table, his instantly lost appetite. He knows that his mother is not talented in cooking and is always busy working in the office, therefore Alex always cooks himself at home, but this time he must go to school immediately, so he is forced to eat the toasted bread. Alex has a pretty good build for a teenager of his age, from the outside he may look like an innocent and indifferent teenager, but from the inside he has an caring and kind hearted.