Building G was pitch black, with only a little light streaming in through the dirty windows that dotted the walls. Thick dust accumulates on the windowsill. Noah wiped his nose with his sleeve and walked down the hall.

Fortunately, the building is not designed to feel like an enemy of the world. A path winds in a square spiral towards the center.

However, less fortunate but somewhat predictable, room numbers start at 1. When Noah walked to his 90s, the light was completely gone. He groped his way through the darkness, following the guidance of the wall. Whenever his fingertips touched wood instead of stone, he added one to his heart.

In some places, torches were lit, but now they are extinguished. Noah was about to turn back to the light source when his outstretched left hand touched the stone.

He groped around, blindly reaching for the wall. They rubbed over the fragile wood. He was standing in a cul-de-sac, facing a door.

"A hundred." Noah pushed the door open, and the door creaked open. A tiny ray of light shines through the ceiling in the center of the classroom, which has a hole in the ceiling through which sunlight can shine.

The light is just enough to illuminate the shadows in the classroom. Old wooden chairs were scattered on the floor, most of them damaged or unusable. At the end of the room, behind a heavily crooked blackboard, hung a rotten podium.

In the center of the room were several long tables covered with a thick layer of dust. Noah ran his fingers across a table, then sighed. He walked up to the podium, nearly tripped over the discarded wood several times, and then turned to face the empty classroom.

"One thing to tell me, my attendance is not very high," Noah muttered to himself. He tapped his fingers on the podium, then lowered his head and looked around for chalk. Nothing but broken wood and metal were left on the floor. Noah sighed. "Well, at least there's a classroom. I've worked with worse people. ”

Noah pushed a table in front of the small light by the window. He sat down, took out his book, and flipped through the scribbled handwriting, trying to make sense of it.

So, he began to wait.

Keep waiting.

One of his feet was worn out by a stone. Seconds later, a warm orange light spilled in through the doorway, and a young woman walked into the room. Her hair was the clearest blue Noah had ever seen, and it matched her eyes. A small fireball floated in her hand, lighting the way.

She froze and made eye contact with Noah.

"What are you doing here?" She asked.

"I believe I'm here for class." Noah replied, his gaze locked on the flickering fireball.

The girl frowned slightly. "Vermeer?"

"No, I-oh. Yes. That's who I am. ”

"Isabel, who are you talking to?" A muscular blonde boy pushed her away and walked into the room. He was also stunned, and his eyes widened when he saw Noah. "Wow."

"What?" Noah asked, looking down at his clothes. "Do I have dirt on my lapels?"

"I've never seen him come to class," Isabel muttered.

Unbelievable. Are these people my students? I'm almost the same age as them.

"Technically, he really didn't," the boy said. "The class should have started forty minutes ago."

Noah's face turned pale. "Ahh Better than nothing, isn't it? ”

"You look...... It's not quite the same," Isabel said with a slight frown. "What trick are you going to play?"

"No tricks!" Noah exclaimed. "I'm just here to teach. You have to forgive anything weird. I got hit by something outside and had a slight memory loss. ”

"All right," the boy said slowly. "Of course. Well, then we're leaving now. ”

"No," Noah said, getting up from his seat and putting the book back in his holster. "I have to teach."

I have to answer all my questions.

"You're late," Isabel reminded him.

"But I did show up. You also showed up. This means that I have to attend the class – how long will this class take? ”

"Two hours," the boy said, squinting his eyes.

"That's an hour and twenty minutes."

"You don't even remember the lesson time," the boy noted.

"I forgot your name even while we were talking."

"Todd."

"Great. Isabel and Todd. Tell me, where are the rest of the classes? ”

"No rest, man," Todd scoffed. "Why are you still here?"

"Go teach," Noah said, patting the table. "Well, two is better than zero. Please be seated. ”

Todd stared at him. "You can't be serious. Are you really going to teach? ”

"I mean, that's my job, isn't it?"

"You've never been serious before," Isabel said. "I don't want to be taught a lesson by you."

"It's brutal," Noah said. "So why not give it a try?"

"You're number one," Isabel said, as if it were the most obvious thing in the world. "And we're also first-order."

"I see," Noah said, even though he didn't actually get it.

"It's true that you're not as skilled as we are," Todd said. He squinted at Noah. "You're only hired because you're part of the Linwick family. See, as long as you don't waste our time, we won't complain too much about your uselessness. Do you understand? ”

Noah pursed his lips.

It's Linwick again. I needed to figure out what my relationship with them was because they were obviously strong. It would be bad if they found out I had stolen Vermeer's body.

"I'm afraid not," Noah said. "Although I have no talent, have you ever thought that I may have some experience that you don't have?"

"Not exactly," Isabel said, arms crossed over her chest. "What's wrong with you? Come on, Todd. Let's get out of here. ”

They turned.

"Sit down," Noah shouted, and he had to rely on that voice whenever classes on Earth became too noisy. Isabel and Todd turned to face him, their eyes wide open.

"What?" Todd asked.

"I'll have time for you for the next hour and twenty minutes," Noah said. "Sit. Down. In any case, you are welcome to leave, but I will report your absence to the school afterwards. ”

Their faces turned white, glared in his direction, pulled out two dusty tables and sat down.

Good. I hope that the school will impose some kind of punishment on students who skip class. Until I figure out exactly how magic works, these two aren't going anywhere.

"Go on," Todd said, resting his chin on the palm of his hand. "I've never seen you so positive before. What are you going to teach us? That time you seduced a girl who was five years younger than you? ”

Noah cleared his throat. "Nope."

"She's one of your students, isn't she?" Isabel asked with a smile. "It's really bold. I can't believe the school didn't help you. ”

"I," Noah said with a raised voice lest they interrupt him again, "I'll talk about runes. ”

"Bold," Todd said. "That's new."

Noah walked over to the blackboard and tapped his fingers on it. He turned to face his student. "What is a rune?"

Todd and Isabel both laughed.

"You can't be serious," said Isabel, who burst into tears from laughing so hard.

Noah just raised an eyebrow. He waited a few seconds for them to take it out of the system and then banged on the motherboard again. "Since it's that simple, let's answer the question."

"What, are we children now? Runes allow us to gather energy and use magic. ”

Good to know.

"And what about you, Isabel?"

"What do you want? Todd has already told you what it is. ”

"I see."

"He's lost," Todd muttered.

"I found out that neither of you knew what you were doing," Noah continued. He slammed the blackboard, which fell off its hinges and fell to the ground behind him. Both students were stunned. Noah tried not to appear surprised.

He glanced back, and his eyes sparkled when he found a piece of chalk that hadn't caught his attention. Noah grabbed the chalk and put the blackboard back. "You just gave me a definition of the least worthless. I didn't ask you what runes are for. I ask you what it is.