The sky was cloudy, the cold wind whistled, and the occasional bird flew by, adding a bit of sadness to the cold sky.

Chu Zexuan walked to the window of the dormitory, staring at the simple and solemn European-style bell tower of the school, this school is too old and too mysterious, listen carefully and you can hear the second hand ticking on the clock face and walking slowly, crisp and long, giving people a sense of isolation from the world.

"Knock ————"

Suddenly, a thick and long bell rang, like the low roar of Satan the Devil summoning the spirits of the dead, at thirteen o'clock. In the West, thirteen represents an unlucky number, and the Greek myth "Feast of the Soul" says that there were originally 12 demigods at a banquet, and then Loki, the god of destruction and calamity, was not invited to the banquet, and he became the 13th guest, in the banquet, the most beloved god Balda was unfortunately killed, so "13" became a sign of bad luck. The sound of the bell startled a few crows in the old tree, and also pulled Chu Zexuan back from his thoughts.

His deep and gloomy eyes began to shine a little, just now it was so fascinating, he seemed to have entered another world, where there was no life at all, it was pitch black, and there was gunpowder smoke and monsters everywhere.

Chu Zexuan rubbed his eyes and closed his eyes to recuperate. He inherited his mother's jet-black hair, fair face and well-defined eyes. The sharp sword eyebrows in the angular face look more imposing on the bridge of the nose as straight as a mountain.

Chu Zexuan licked his thin lips, he had often dreamed over and over again, as if it was a sign that something was coming.

The dream was so real and terrifying, flying in the blood-mist sky were three dragons with bodies similar to those of cougars, wings like bat wings, four dragons with claws as sharp as falcons and scorpions with claws like mud tails, spitting blue dragon breath into the ground, their bodies covered with hard scales, spikes protruding from the joints of their wings, and two rows of chilling giant teeth standing up in the mouths of blood spurting, were biting. The gray and white statues of the ancient gods that were tens of thousands of meters high were destroyed, and there were seven statues of the ancient gods, one of which had a serious head and body, and the huge stones fell down, and the sky suddenly collapsed, the earthquake trembled, and the sky was also discolored. But the sharp trident in the hands of this ancient god still stands in the sky, cold and piercing, straight into the universe.

He couldn't tell if it was a dream or a reality, as if he was in it. Chu Zexuan sighed lightly and muttered to himself, "The end of the world should be like this." ”

At this time, the door of the dormitory was opened, and Wu Yu walked in wearing a black leather raincoat, and Chu Zexuan saw that although he was wearing a raincoat, his whole body was still soaked. It turned out that the weather had changed suddenly, and the roar of thunder was at first dull and sluggish, rolling low, and as the wind raged and ruffled the vegetation of the school, a thunderclap shot out of the depths of the vast sky and exploded in the ears. The yellow mist in the sky had already merged with the black clouds, covering the sky and exuding a hideous momentum.

"Zexuan, are you thinking about that dream again?" Wu Yu said with a smile.

Chu Zexuan smiled self-deprecatingly. The roaring thunder didn't even pull him back from that scene, and it seemed that he was really in a trance.

"Didn't you kid come home? Chu Zexuan was a little happy when he saw Wu Yu, and said with a smile.

He is eighteen years old this year, and Wu Yu is a full year younger than him, but he always loves to be big, and often calls the last two words of his name.

"After the holiday, everyone left, and there was no one in the school, don't you want to go back to Shanghai, or you and I will go back to Tokyo, otherwise it will be too lonely at school during a holiday. ”

Kureha is Japanese, gentle and considerate, and very good at taking care of people. His original name was Genji Takiya, and his Chinese name was Wu Yu, and he could speak fluent Chinese, and he was the only one in Chu Zexuan. 's roommate is also one of Chu Zexuan's few friends.

"Thank you, I won't go to your house this holiday, I have something very important to do today, say hello to your parents on my behalf. ”

Speaking of this, Chu Zexuan was a little moved, and his thoughts drifted to the past. He grew up without a father and lived with his mother. Mother was a naturally beautiful and cheerful person. She has a proud figure, a pair of curved eyebrows and sweet dimples and a very unconventional smile. She told Chu Zexuan: "When you encounter difficulties, you must face them with a smile." She works in the city's repertory troupe, picks up little Chu Zexuan home at night to cook him his favorite braised pork, and tells him the story of Prince Charming and Cinderella to put him to sleep, and he doesn't feel bitter at all. It's just that every time he asks why he doesn't have a father, his mother doesn't say anything.

When he was six years old, his mother found him a stepfather, a well-known pianist, and the little Chu Zexuan accepted it although he was not happy. Although the stepfather was strict, he was very good to their mother and son, and the family lived happily. But accidents always come so suddenly, my mother inexplicably suffered from a strange disease, the blood vessels turned blue and constricted during the day, and the blood vessels blackened and expanded at night, which frightened the whole family. After going to many hospitals and doing countless tests, the doctors were unable to find the cause. Even at this time, when his mother saw Chu Zexuan, she would still show that signature smile, telling him to believe in his mother, and his mother would definitely get better. But it backfired, Chu Zexuan watched helplessly as his mother died in pain. The doctor said that it was most likely a genetic disease, and it was after his mother's death that he always dreamed of those strange images. Worried that he was overly sad and hurting his body, his stepfather began to teach him to learn the piano in order to distract him, and he was also responsive in life. But this does not fill the eternal pain in the hearts of children.

Until one night, a masked mysterious man with a cloak entered Chu Zexuan's room, looked at the 15-year-old child, and seemed to think of something, the masked man burst into tears. He didn't wake the little boy, but sat by and watched him quietly. The next morning, Chu Zexuan saw a person at the head of the bed in a trance, he thought it was his mother, and shouted happily, "Mom, I knew that they were all lying to me, you didn't die! I miss you so much!" But what came was an old voice: "I am not your mother, but I am her old friend, do you want to know what kind of strange disease your mother has, do you want to prevent this disease from befalling you?" Come with me, I can help you." ”

Chu Zexuan was silent, and he didn't even feel a trace of fear. It doesn't matter, he has long wanted to leave this lonely world. Every night, as soon as he closed his eyes, the image of his mother's illness appeared in front of her eyes, and he had to cry for a long time before he could fall asleep. Sometimes he dreams that his mother is not dead, but every time he wakes up, all he accompanies him is the cold air.

Although the man in front of him is very strange, as long as there is a glimmer of hope in the mystery of his mother's death, he will not give up. The masked man took Chu Zexuan to find his stepfather, and the stepfather saw that suddenly a stranger was still holding Chu Zexuan in his house. At that time, he picked up the phone and wanted to call the police, but after the masked man whispered a few words in his stepfather's ear, the stepfather slowly put down the phone in his hand, and his eyes were full of incredulity.

Later, the masked man proposed to his stepfather to take Chu Zexuan to an aristocratic school that was the world's top in all aspects but did not open enrollment to study surgery, and promised to take him and his stepfather to visit together. The stepdad finally agreed. He knew that Chu Zexuan had never been a sparrow in his comfort zone, he was a bird who liked storms and rains, a Kunpeng who soared into the sky, and a phoenix who was reborn from the ashes.

In this way, Chu Zexuan left home for the first time and came to this school and lived alone. The school is called Nidhogg Academy, a poisonous dragon in Norse mythology that perches at the roots of the World Tree and gnaws at the roots. In Ragnarok, Nidhogg finally bites off the roots of the World Tree, one of the warning signs of the end times.

The college was built on an island between England and Iceland, 400,000 square kilometers in size, and each island was a school. At that time, people did not have the concept of a university, and thought that the island was a place to learn black arts, and some people went to find this school, but none of them came to an end. Nowadays, Nidhogg Academy has become a comprehensive aristocratic university, with the world's most prestigious professors and the most advanced scientific instruments, only a few rich and powerful people in the world know that there are only two kinds of people who come to study here, one is the children of the most powerful people in the world, and the other is the people chosen by the school itself.

Chu Zexuan was stunned when he came to the island, he didn't know that there would be such a magnificent building in the world. The school is a medieval castle, surrounded by mountains on three sides and facing the sea on one side, with a golden sand beach on the seaside, which is a popular place for students to play, luxury yachts parked on the shore, creeks, coconut groves, cherry blossom hot springs. Behind the sandy beach is the pasture below, and the school's magnificent walls connect the other three mountains of the island, occupying most of the island, with seven tall round towers guarding the castle like sentinels, narrow windows on the rocks, semicircular arches, low igloos, and doorframes raised from one floor to another. A large number of columns and vaults of various shapes are used to achieve a sturdy and heavy, balanced and stable aesthetic effect. The purple agate in the teaching building is inlaid into the light-colored glass, and many patterns can be faintly seen, intertwined with each other, and a school flag with a bright red crescent moon on the top of the fort flutters in the wind...

Since then, Chu Zexuan silently swore in his heart that he would never return to the place that once made him desperate if he did not find out the cause of his mother's death. His stepfather would come to school every holiday to see him, bringing many hometown specialties. But every time he asked Chu Zexuan if he wanted to go home for a few days, he was politely rejected by Chu Zexuan. Since his mother left, his only goal in life has become to find out the cause of his mother's death, and he does not believe that his kind and beautiful mother will suddenly die of a strange disease. In the past three years, he has worked hard to study medicine and wants to give an explanation to his mother, who is far away in heaven, but he still has no clue about his mother's illness. At this time, the mysterious man found him, told him that he did not need to bother in human medicine anymore, that her mother's illness did not belong to this world, and asked him to meet tonight to tell him something important.

Chu Zexuan was thinking about it when he heard Wu Yu say, "You are too stubborn, you haven't been home once in three years." Wu Yu looked disappointed, "Then we will finish this lunch together, and I will go back to Tokyo." ”

Wu Yu snapped his fingers, and two European waiters in Scottish skirts and red bow ties who had been preparing to be at the door of the dormitory walked in elegantly pushing the dining cart, the dormitory of the aristocratic school was much larger than the ordinary apartment, and the waiter spread the exquisite embroidered tablecloth on the spacious square table, and put down the antique candle holder, silver knives and forks and porcelain plates.

The meal was hearty and it was a traditional French meal. The thirteen dishes were served on the table in order. Cod, beef and tomato bisque, appetizer salad, side dishes Arctic shellfish, caviar, main course steak, side dish snails, foie gras, dessert cheese, etc. After eating these, the two of them were almost full.

"Zexuan, I also prepared a good Lafite today, the most important thing in French food is aperitifs and after-dinner wine, you don't drink these, it seems that what you have to do must be very important!" Wu Yu wiped his mouth with a silk scarf and asked with a smile. He knows this guy, don't look at him, he is usually quite self-disciplined, but sometimes he can't persuade anyone to use alcohol to kill his sorrows.

Chu Zexuan smiled and didn't answer, what he had to do today was not only important, he had waited in this school for three years for this day!

Wu Yu looked at this somewhat taciturn friend, and suddenly felt a little reluctant, he always had a premonition that he would not be able to see each other for a long time at this time. When he was about to get on the plane at the airport on the island, he solemnly glanced at Chu Zexuan, who came to see him off.

"Hey, it's not life and death, let's get on the plane, we'll see you at school. Hearing what Ze Xuan said, Wu Yucai reluctantly got up to pick up his private jet and left.

It was only seven o'clock, but the island was covered in darkness due to the heavy rain that had rained before. Chu Zexuan glanced at the crumbling sky, took a few deep breaths, and said secretly:

"Mysterious man, I'm here, you have been hiding from me for three years, and the answer will be revealed tonight!"

At this time, meteors twinkled at the end of the island, and tens of thousands of meteors fell from the night sky in the distance with golden tails. Chu Zexuan, who was facing this magnificent scene, forgot that today there was the largest meteor shower on the earth in the past 10,000 years!