I used this time to turn toward them and raise my right hand. 

"Maelstrom: Red!" 

My hands erupted with a tempest of red flames, eagerly reaching for the demon beasts trapped in ice. The fire was massive, easily as large as a double-story building. Its fierce heat devoured the frozen confines as it moved hungrily toward its prey.

The hungry flames engulfed the beasts, setting them ablaze and melting the ice around them. However, the fire wasn't enough to completely reduce them to ashes.

Hence I decided to take a step further. 

"Maelstrom: Blue!"

The flames transformed, now ablaze with a scorching blue hue, and their temperature soared to unprecedented levels. Faint screams echoed from the demons as the inferno consumed their flesh and blood, leaving nothing but ashes in its wake.

The flames disappeared and the cores of both the demon beasts dropped on the ground. I knew this would happen; it was idiotic to expect mere flames to burn the cores. 

Right now I would very much like to go there and smash those cores so that the beasts can't regenerate themselves, but sadly I didn't have the luxury to do that. 

In fact, I didn't even have the choice to relax for a second. Despite killing three demon beasts right now, I was still surrounded by a great number of them. 

I could ask Req for help, but that wasn't a very good option. After all, while I was here fighting at most ten to fifteen demon beasts at once, she was there taking care of them in numbers that crossed thousands. 

Therefore I had to get out of this mess on my own. I mean, this was the worst part of fighting these beasts. They had a habit of surrounding you and then attacking you all at once. 

Although I was getting used to fighting the demon beasts with time, this was still hard. I had to use my [Foresight], elemental magic, swords, and normal magic spells, all at once if I wanted to stand a chance against them.

Naturally, this was pushing my body far beyond its limits. Right now there was not a single part of my body that was not dying with pain and stress. 

But I had to do what I had to do. 

Thus without wasting a second, I created another sword of ice in my right hand. Then I modified both the swords and made them more lethal while fixing all the damage they had taken. 

I decided to add something new as well. Using elemental magic again I set the edges of the sword to fire. 

Now due to this, I started using up my mana even faster since I had to continuously use elemental magic to keep the swords from melting.

'This can be a pain in the ass. I'm causing more stress on myself.'

Hence I decided that I would stop using this technique if it didn't increase the damage rate. And with that decided, I once again began to fend off the demon beasts. 

Defend, counter, attack. That's all I had to do. But it was much easier said than done.

"Agggghhh!!! Why don't you all just drop dead!" 

Ever since [Foresight] leveled up I was able to see 0.2 seconds into the future. However, in return, it made it even harder to use for longer amounts of time.  I think you should take a look at

If before I was able to use it for 15 minutes without any pain, then now I could only use it for six to seven minutes without any pain. 

And it had been well past an hour or two since I was using it, the amount of pain in my eyes and head was indescribable. 

"Wrath of the sky!" I said, immobilizing the demon beasts on my right as a pillar of lighting fell on them from the skies. 

"Discharge!" I said, casting another spell.

As I stood on the ground, a magic circle materialized beneath my feet, and a surge of electricity spread in all directions. While it didn't cause significant damage, it gave the beasts a slight shock, buying me the precious fraction of a second I needed. That was all I required.

"Maelstrom: White!" 

Spikes of ice shot up from the ground, stabbing the beasts as before. But this time, I fueled the attack with more mana, successfully trapping all the demon beasts on my left.

"Maelstrom: Blue!"

A torrent of blue flames erupted from my hand, surging toward the demon beasts and engulfing them entirely. The flames voraciously devoured their flesh and blood until nothing remained but their cores, just as it had happened before. The beasts were once again wiped out completely, leaving only their cores behind.

"All right, this takes care of the left," I said to myself. 

"Now then," I looked forward to the beasts standing in front of me. There were six of them. 

I tightened my grip on the swords. The fire trick was consuming more mana than it was helping thus I turned it off. In return, I made the blades as sharp as I could and modified their shape yet again. 

Now they were bigger—carrying a little resemblance to the blades of chaos. 

I leaned forward, saw the locations of each demon beast, and then kicked off the ground. While I was dashing toward them I thought of what I was going to do. 

First I will use White to trap them, by that time I will reach near the beasts on the front. I will destroy their cores with the swords and use Blue on the ones behind them. 

By the time I finished sorting out the course of action, I had reached the decided location. I slowed my speed and then prepared myself to follow through with what I had thought. 

"Maelstrom: Whi—"

I wasn't able to fire it at the right time. 

"H-Huh? What's happening?..." I felt a little dizzy, but that was not the problem. I stopped in my tracks and saw that I was spitting blood, but that was not the problem either. 

The problem at hand was that I was losing my vision. It was getting blurry, and not your normal type of blurry. It was a reddish blur. 

Soon my entire field of vision got covered and I was unable to see anything at all. It took me a moment before I realized that I had overused [Foresight] to the point that now blood was draining down from my eyes. 

Although it was too late now. It had affected my brain as well and I was losing consciousness. Yeah, I was losing consciousness and was unable to see right when I could hear the demon beasts breaking free from the ice and coming toward me.