When Harry, Ron and Hermione walked into the classroom of the Dark Magic Defense Class the next afternoon, Sirius had already appeared early, and he became completely different from before - wearing a delicate slim dark dress, a liner of the same dark color, a loose collar, and a casual expression on his face, and his curled black hair, it seemed like he was walking out of an oil painting.

"Harry?" he walked over and asked with a worried look on his face. "I heard you deducted a lot of points? Did Snape do it?"

Harry suddenly felt a sense of time and space disorder. Sirius' image seemed to overlap with his best man at his parents' wedding more than a decade ago, and at most it is more mature now.

"It's nothing," Harry muttered, he didn't want Sirius and Snape to clash.

"Okay, let's talk about it later." Sirius hesitated for a moment, "You stay after class, and there is something you think should be made known to you. It has something to do with Hagrid."

"He's back?" Harry asked in surprise.

"Shh." Sirius stopped the three of them, "He didn't want others to pay attention to this, and he was still unable to escape for the time being... We went to visit him with Felix tonight."

Harry, Ron and Hermione looked at each other and stopped asking. They sat in the seats, and Ravend Brown in the back row was biting his ears at Parvati- "Don't you think the new professor is more handsome than Lockhart before..." The two girls started to chatter.

Harry quickly moved to the seat inside, fearing that he would be infected by the silly aura emitted by the two of them.

Hermione looked at Sirius and asked with anticipation, "You guys say the sea - will he come back for class next week?"

"I don't know, hope." Harry said, judging from Sirius' tone, Hagrid should have come back, but why didn't he show up?

The bell rang, and all the students looked at Sirius silently, with deep eyes hidden in their eyes. This was the treatment that every new professor had, but this time it was particularly different. It was really because of his resume that was too scary - of course it was not because of his identity as the aide of the Minister of Magic, but because this person had escaped from Azkaban with the title of "the first Death Eater under the mysterious man". His horror reputation scared them for half a year.

At that time, everyone was very curious about how he escaped from prison and approached the school. Many students here had rumored the new professor.

"Okay, classmates, as a routine, I need to introduce myself first. But I don't think anyone here doesn't know my name. After all, my wanted order has been hung in Hogsmeade for more than half a year. The one on the Honey Duke's window is amazingly large..." Sirius said happily: "Although my appearance is different from that time, my name has not changed."

"Sirian Black, you can call me professor, Professor Black. Of course, you can just call me a name if you get familiar with it."

The students exchanged glances with each other, and the new professor seemed easy to talk to...

"Are you a question? If not, we will start class."

"But-" Hermione raised her hand, "Uh, Professor Black?" Sirius smiled at her.

"We don't have textbooks yet," she said.

The students nodded one after another, and Harry's heart rose, afraid that his godfather would say: I forgot. But Harry thought about it again and felt that it was unlikely.

"You said the textbooks, we can't use that thing. What I want to teach you cannot remember with your brain." Sirius said.

"Take your wands with me now." Before the others could react, he had disappeared from the classroom.

After a few seconds, he showed half of his head in confusion, "What are you waiting for? Am I not clear enough?"

Everyone started moving and exchanged excited eyes with each other.

Hermione was shocked. She was still stunned when the other students stood up from their seats and walked towards the door.

"A good start, isn't it?" Ron said, holding his unicorn wand in his hand. "I suddenly had confidence in him."

They lined up in sparse lines to walk down the stairs, then walked through the foyer, out of the castle, and stopped in a clearing on the edge of the black lake.

Maybe it was because it rained yesterday, and today's weather was particularly clear, warm and comfortable. The sun was shining, the breeze was gentle, and the golden waves on the lake surface were rippling. Many people had a thought in their minds, it would be great if it was the weekend.

"When will two extra walls come out here? It's so ugly..." Draco Malfoy asked with a frown. On the grass not far from them, there were two stone walls erected, about twenty feet long, nearly one person high, sixty or seventy feet apart.

Sirius pretended not to hear it, but he built it little by little. Even if it was crooked, it was understandable, right?

"Quiet, classmates. The Black Magic Defense class has an eternal theme, which is how to protect yourself when you are in danger. And my requirement for myself is to teach you how to protect yourself during wartime... Can anyone say it?"

Unexpectedly, Hermione was the first to raise her hand.

"Hermione-" Sirius coughed suddenly, "Well, I mean, Miss Granger, you answer."

"According to the booklet issued by the Ministry of Magic, once danger occurs, the only thing a minor wizard has to do is to protect himself and stay away from danger - quickly meet with his family and use the phantom to move and escape, so everyone must master and adapt to the appearance of the minion."

"Very good, very correct, have you remembered it?" Sirius looked at the student.

Only a few people nodded. Sirius frowned, "I said... it's not difficult. Do you need her to repeat it again?"

Now almost everyone nodded.

"Great, then this part is over." Sirius said with satisfaction.

Others were a little stunned. What does it mean to 'shut'? Sirius cleared his throat, "It's that simple to protect himself. Don't run around, don't make trouble. It's almost enough to learn the skills of the minion's appearance. The minion's appearance will not be discussed today. I forgot to apply for permission with the principal..."

Then, his tone became low and solemn, and just standing there could attract everyone's attention.

"It is of course the best thing to be able to escape, there is no need to risk your life... But if you can't escape, or have a reason to stay, then you have only one choice left - that is, to take up your wand and fight bravely, no matter who the enemy is." He said in a deep voice.

At this time, we can see the subtle influence of the traits advocated by different colleges on students. Although it is not obvious to pick them up separately, if you enlarge them to a group, you can still see the difference - most students, Gryffindor and some Slytherin students were moved by the tenacious fighting spirit in Sirius's words and began to think about under what circumstances they must choose to fight, but some people still shook their heads slightly and expressed disagreement.

There is actually no distinction between the two. Too calm is indifferent, and brave crossing the line will become reckless.

...

"Okay!" Sirius clapped his hands and said to the students: "Group below, the students from Slytherin College stand here, and the students from Gryffindor College go there." His hands were spread out, as if he was holding two small flags indicating the direction.

The students followed the instructions toward the designated position, and Draco Malfoy strides over Harry and looks back and shows a provocative look.

"It seems like there will be a duel in a while, and I learned a lot during the summer vacation," he whispered.

"You can challenge me." Harry had been used to these words, so he answered very smoothly: "But my opponent is the Death Eater. If you know him, you can introduce him to me, do you know?"

Draco's smug expression froze, and he remembered Aunt Bella, who had lived in his house for a short time.

"Hurry up! You two!" Sirius urged beside him, and the two stood in their respective academies. I wonder if it was a coincidence, Harry found himself standing in front of one of the stone walls, and so were the group of people opposite him.

Sirius stood among them and took out a whistle from his pocket: "What you have to do is to fight in practice, and it's okay to understand it as a melee. Take the academy as the camp to knock down the other side. I want to see your true level and follow my instructions - when the whistle sounds, you can start. I will give a prompt in advance, remember: Only use coma and iron armor curse, there should be no one here who can't do it, right?"

The two groups were stunned for a few seconds, fighting?——"This is not fair." Draco shouted, "We have even fewer people!"

"Why would I change you to another group?" Sirius asked in a threatening tone with her white teeth. At least from Draco's point of view.

"I won't go." Draco said with his neck shrinking, letting him be a Slytherin to a group that is all Gryffindor? He has only experienced this feeling at the Magic Club, but it's not a fight.

"Then be obedient," Sirius said impatiently, and then whispered to everyone: "Do you think the competition will only be held once? Do you think everything on the battlefield will be as you wish? I hope you will have the strength to complain later. I have prepared a lot of tricks!"

Harry held the wand tightly in his hand. He had never expected that the content of the practice class would be a melee, and the Slytherin students opposite were also confused. But gradually, the expressions on the faces of some students became vivid, and the thoughts hidden in their hearts quickly grew wildly, and they all showed dangerous smiles at their opponents.

Harry's heart tightened, and he leaned closer to Ron's direction, while whispering to Hermione, "Get closer, we'll get together."

"What, oh!" Hermione hadn't recovered from her shock, and she was obviously confused: "How could Sirius do this? He would definitely receive a lot of complaints! He was doing it even better than before, Professor Moody-"

"Let's talk about it later." Harry interrupted her.

On the other side, most of the students were still standing in place in a daze, Sirius had already begun counting down, "Three-Two-One-Drop!" A loud whistle echoed in the field, the red light of the coma curse crisscrossed, Hermione and Ron released the iron armor curse at the same time to protect them. Harry's wand poked out from the gap in the spell, shaking quickly, and the two of them fell down on the opposite side immediately.

After one round of confrontation, Gryffindor and Slytherin each fell down nearly one-third, and everyone stopped, not knowing what to do next.

"Continue! Until one side falls completely!" Sirius, who retreated to the distance, shouted at them.

Draco Malfoy was the first to react. He stood behind the crooked stone wall and shouted to others, "Come here! We are few, use the environment-" A spell hit the wall near him. It was Ron, who regretfully put away his wand: "I didn't hit it."

This spell is like a whip, and the students run behind their stone wall. From Sirius's perspective, they will find that the students of the two academy are standing behind a stone wall, protruding their heads carefully.

More than a dozen students were already lying on the ground.

Behind the stone wall, Harry licked his lips, he felt no pressure, and knocking down the two of them with a silent coma curse seemed to be a breeze, especially since he had the iron armor curse protection of Ron and Hermione, who felt that his previous practice was too conservative.

"Don't worry about the people on the ground, they are already 'corpses'." Sirius shouted from afar.

Under his urging, the two groups of students chanted each other's spells through the stone wall. After the initial fear and discomfort, everyone was immersed in this tense, exciting and alternative duel game. They gradually gave up their defense and shot each other with a coma spell. After a few minutes, both sides fell down half of their companions, and there were only single digits left on Slytherin, which made Sirius shook his head.

Now the situation on the field has turned into a bad battle.

The huge disadvantage in numbers made the students of Slytherin wake up. They finally stopped showing up and hid behind the solid stone wall, only occasionally glanced quickly from the edge of the defensive wall or above. If the Gryffindor group had students standing carelessly, they would be hit by a messy spell in the next second.

The situation was in a deadlock. Sirius raised his wand from afar, freeing the unlucky guys who were hit by the coma curse from the "battlefield" and awakened with the Resurrection Curse. Many people looked shocked when they woke up, and they had no idea how they were hit.

"Look carefully, I'll write a paper when I go back." Sirius said to them.

...

"What should they do if they hide inside and can't come out, Harry?" Neville shouted leaning against the wall. He just poked his head out, but was almost hit by a spell.

Harry looked back at the remaining people, "There are 16 left." Hermione said. Harry gritted his teeth, "Are you willing to act in unison?"

"Of course."

"We all listen to you, Harry."

"The opportunity is so rare. We are about to defeat Slytherin." Seamo said excitedly.

"Okay," Harry stopped refusing, "I, Ron, Hermione," he hesitated, "and Neville, we walked in front, defended with the armor spell, Semo and Dean were ready to take over at any time, and the others stood behind us and recited the coma spell!"

They spent half a minute to adjust, barely forming a formation, and walked out from behind the stone wall.

On the other side, Draco frowned and felt something was wrong. There was no movement outside for a long time. What was going on? He estimated that there were at least a dozen people opposite him, and on their side - he had a gloomy face, only six people.

No matter how you think about it, you lose.

Damn Sirius Black, Dad's words are right, he is the biggest traitor in the Pure Blood Family!

He glanced at the follower beside him - Gole had fallen, only Crab was left, "Crab, go outside and take a look." Crab was unwilling. His muscles could not stop so many magic wands. He poked his head out of the wall, and then his eyes suddenly widened.

"What's wrong?"

"what happened?"

"You said it!"

The remaining few people asked in a mess.
To be continued...