Isekai Mahou wa Okureteru! (WN)

「Modern World Magician vs Other World Magician」

It went just as he had planned. Because Suimei lured Felmenia to the barrier, he can now demonstrate his full power as a mage. Seeing the gap in power, Felmenia could only stand in fear and frustration. In front of her, Suimei had showed unimaginable knowledge and magic power. If anyone here was to witness this, they would know that this is overkill. Felmenia Stingray, no, mages in this world are too far behind in their world's magic. Then, he should go easy on them. He should reduce the useless magic power and control them. That would be efficient and gentlemanly. Yeah.

But, Suimei has no such intention. Even if he didn't know the level of magic here, didn't know the legal use of a magic circle, didn't know that chanting is essential, or make the magic pool into his body as a mage of this world would, a mage is still a mage. He prepared the stage for the fight. Since he's the host, he must not forget the courtesy of giving his full power no matter how low the challenger's level is. If you're a mage, do it like a mage; always show your best magic to fascinate the opponent's heart and make them surrender.

Though, it's true that he prepared it for another reason, too. In the middle of a fight, as the host, he has to appear full of spirit. That's, Suimei Yakagi's pride as a mage. After the confrontation a while ago, of course there's no starting line for this fight. The fight had already begun a long time ago. It's now left to whoever decides to move first. Unable to endure the fight's tension, the first one to move is Felmenia.

"Oh fire— Become the true flame and burn away those who stray from your path— Burn away everything— Become the white catastrophe, <True Flare>!" – Felmenia

It's the true flame she proclaimed earlier. Even if she said it's a true flame, it's just a high temperature flame caused by magic. It seems that the previous flame was just a test. There's a huge difference in the scale. That would mean, the magic power infused into this is large. Suddenly, the flame started swirling like a vortex. It spread a bit, and then it went at him while twisting like a tornado.

Then, Suimei's heart changed completely.

The flame is coming towards him. Even if there's no strong feeling in it anymore, of course, Suimei had no intention of staying still. He took a breath, concentrated, optimized his magic, and he cast it.

"〈〈Secandum ex Quartum excipio〉〉 [Second, Third, Fourth Wall, Local Expansion]!" – Suimei

This is a magic for defense. When he first came to this world, he already thought of using it, 'A Dazzling Golden shield'. He stretched out his hand, three golden magic circles appeared and turned into a shield. If it's just a hot flame, it would have no effect. The shield is firm. It won't break from something like a flame. Stopped by the triple magic circle, it can't help but disappear.

Seventh Article, White Flame, made a thunderous noise in its path, and it crashed into the golden magic shield. Upon the impact, the pure white flame scattered. The white flame is trying to pass through it, and it is making thunderous sounds and sparks. It destroyed the surroundings... 1 second. 2 seconds. 3 seconds. 4 seconds. However, the white flame couldn't go through it. It was stopped at the second magic circle. The third circle is rotating in order to configure the magic and unravel it. As a result, the dazzling white flame turned back to a red flame. At last, because of the fourth (last) circle's power, reflection, the flame is scattered in all directions. The magic circle stood there until everything disappeared; this attack was full of rage.

"No! I'm not finished, yet!" – Felmenia

A voice filled with spirit can be heard. It's the proof of the next shot. Even though it was blocked, she accumulated the white flame again in the air. By saying "Oh, Flame!" for the second time, she shot again on her command. Once again, the white flame is coming; however, this time, attack approached from the side in order to pierce the barrier.