Transferred to Another World and Became a Teacher

"Well then, I'd like you to rewrite the magic circle."

Hearing this from Balblair, I checked the material of the rooftop floor. Conveniently, there was a large, seamless rock placed here. It seemed they had been using it to draw the magic circle.

"It's a large rock floor, and it's pitch-black. Was it carved out?" I asked.

Balblair nodded. "It's a rock called Black Eyestone. Since we need to redraw the magic circle multiple times for experiments, we use this rock because it can be polished to reflect like a mirror."

"I see. So it's fine to use this rock?"

"Use the rock? Of course." She nodded while tilting her head.

After obtaining her agreement, I immediately began to rewrite the magic circle.

I knelt down on one knee and placed one hand on the surface of the rock.

Then, while channeling my mana into it, I cast a spell. "[Stone Surface Manipulation, Processing]."

As soon as I cast the spell, the surface rippled like water, and the drawn magic circle vanished into the rock. Then a blue light ran across the rock's surface, leaving behind a neatly carved groove about a centimeter wide. It looked like a mystery circle video created with poor image editing.

While thinking about this, I engraved the runes for Flame Wall into the magic circle.

I completed the magic circle in just a few seconds and stood up. "Looks good. Now, can someone channel mana into it?"

When I turned around, I saw Balblair with wide eyes, standing there frozen as if time had stopped.

As soon as she noticed my gaze, she cleared her throat and glanced back. "Cameron, try it."

Hearing the sudden command, the wide-eyed Cameron faced Balblair. "U-um… if I wasn't mistaken, that was a chantless spell…"

"Cameron." Balblair's stern voice came, sounding like a reprimand.

Cameron, who was visibly shaken by my chantless spell, said. "Ah, y-yes… then…"

Still confused, he quickly moved in front of the magic circle, placed his hands on the edge of the circle, and began channeling mana into it.

As expected of a senior teacher, he seemed to channel mana quickly.

"Oh, by the way, the spell name is required to trigger the spell. The spell is called Flame Wall."

With a troubled expression, Cameron took a deep breath and began to speak."[Flame Wall]."

After he finished the chant, flames erupted before him. The flames blazed like an explosion, shooting up over a hundred meters in an instant.

Watching the roaring flames, I muttered to myself. "Given the scope of the magic circle, it's more of a pillar than a wall. Should I have floated it up and then spread it sideways or changed my approach and made it rotate to cover the sky?"

While I was pondering various matters, Cameron stood up, looked at me, and reported in panic, "U-um! The fire… the fire isn't stopping! I haven't put any more mana into it!"

Balblair looked doubtfully at the magic circle. "Is it a failure?"

I shook my head. "No, it's just that the effect is still active. It seems Cameron-san channeled too much mana."

Cameron, breaking out in a cold sweat, waved his hands frantically and tried to explain, "No way…! I just channeled the minimum amount of mana needed to activate the magic circle as usual!"

He didn't seem to realize that this was exactly the problem.

"You've put too much mana into it. I'm sorry for not explaining earlier, but this magic circle activates with just one-tenth the mana compared to the previous one. So you've infused ten times the required mana," I explained.

Cameron looked at me and opened and closed his mouth in astonishment.

I gave a wry smile, then looked at the pillar of flame. "For now, I'll extinguish the flame."

I cast a spell. "[Freezing]."

Then a small blizzard arose. In an instant, a white wall formed before everyone’s eyes. The pillar of flames was quickly swallowed up, and the once blazing flames turned into ice particles dancing in the air.

I watched the enchanting scene, thinking it looked like diamond dust.

Balblair, standing next to me, said, "I see. So this is a senior teacher of Fiddiq Academy."