A wounded Vritra emerges from behind a cloud of dust and closes in on me. I saw it up close, but Vritra was huge. The diameter of its torso was about 70 centimeters at the thickest point.

　Vritra's defense seems to be very strong. There are small scratches here and there on her long torso, but they are nothing compared to the wounds inflicted by the "crash ball" attack.

'Hah, that skin is really tough.'

The power of the "Burst Shotgun" is dispersed into thirty pieces, which makes it smaller, but the explosion caused by the characteristic is so intense that I am not convinced that it is only a graze wound.

　I don't agree with it either, but it's a fact. The "crash ball" has been proven to have tremendous penetrating power, but since the diameter of the D-particle vibration ball is about 10 cm, it can only make a hole of that size.

　Hence, it is an attack that cannot provide a decisive blow against giant demons.

I didn't expect such a formidable foe."

What do you want to do?"

　I thought about it as I stared at the approaching serpent with its scythe lifted, and an idea came to me. But I decide that it is not something I can do without practice.

　While I was thinking about it, Vritra was getting closer and closer, closing the gap to 30 meters. The closer the distance, the easier it would be to hit the "crash ball".

　I launch a series of "crash balls" and attack as if I had a few shots. Vritra's long torso twists and turns, making it difficult to hit it. I hit it twice, but they were not fatal.

　After seeing Vritra, he activated "Magnetic Barrier" and deployed a wall-like magnetic barrier in front of himself, Elmore, and Tamegoro, then waited for the serpent to approach.

　The moment the distance between me and Vritra reached 10 meters, I swung down my black will staff in my hand in an exaggerated manner, using this action as a trigger to activate the Seventh Glaive.

　The blade of the glaive formed with D-particles hit Vritra's torso, exceeding the speed of sound. ＜The blade, which had been given the "Zan-Gou" property, struck Vritra's torso at a speed faster than the speed of sound. As expected, Vritra was unable to bounce back, and the blade bit into her torso, producing the additional effects of the characteristics of and .

　When I saw the explosion, I hid behind a magnetic barrier to avoid the blast and the blood that splattered from Vritra. With the current blow, Vritra's breath is gone.

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　I wonder if the property was unnecessary for this. ＜I think it would be more powerful if only the "detonation" was used. It seems like they tried to put all the characteristics to the limit and failed.

　I decided to modify "Blow Up Glaive". ＜I decided to lower the level of magic that can be learned by removing the "Discharge" property. I could do this because the magic is not registered with the Magic Agency.

Well done."

It worked, but this kind of fighting drains a lot of magic power. I'll have to think about it."

　Tamegoro picks up a magic stone. When he receives it and checks it, he finds that it is a red magic stone .

Thank you."

　I was hoping that the skins would remain as a drop product, but alas, there seems to be no drop product.

　Later, we explored the jungle and found something unpleasant. We found a place where about five Vritras were nesting in a group.

　I observed it with binoculars from a short distance away, and it is quite a chilling sight.

"Wow, there's a treasure chest in there."

'For fundraising purposes, I'd like to have a treasure chest.'

But you can't fight five Vritras."

　I think I can take down at least two of them, but while I'm taking them down, another Vritra is going to approach me and attack me.

　I decided to turn back. I returned to the fifth level and camped in the middle boss's room. There seemed to be no other adventurers, so I camped alone. The reason I camped in the middle of the dungeon instead of returning to my house was that I was obligated to report to the Adventurers' Guild once I left the dungeon.

　I want to get that treasure chest somehow. To do so, we have to defeat a group of Vritras, but we lack the means of attack to do so.

Create new magic?"

You mentioned that after you defeated Vritra, a new use for the 'crash ball' was sparked.

　I had an idea that was sparked while I was fighting Vritra. That is what Metis is talking about.

It's about taking advantage of multiple activations."

I thought you couldn't do "Crashball."

　Basically, life magic can be activated in multiple ways. While magic that uses a large amount of magical power, such as "Wing" and "Boomerang Wing," is not possible, there are many living magic that can be activated multiple times.

　However, in order to achieve a synergistic effect through multiple activation, it is necessary to stack those formed with D-particles. If it is shaped like a bowl used in cooking, like the "Thunder Bowl," it is easy to form multiple bowls formed with D-particles, stacked on top of each other, to create a synergistic effect.

　However, the D-particle vibration balls formed in "Crash Ball" cannot be superimposed because they are also balls filled with D-particles inside.

　In the case of life magic, this kind of magic that does not produce a synergistic effect even after multiple activations is sometimes expressed as "cannot be activated in multiple ways. Métis wondered about this because "Crash Ball" could not be synergized.

I don't think 'crash balls' need synergy," he said. So I thought I'd multiply the activation and make the D-particle vibrating balls fly side by side."

　If seven D-particle vibration balls are flown side by side in a seven-fold activation, even Vritra can be killed with a single blow.

I see, the D-particle vibration ball is about 10 cm in diameter, so if you put seven of them side by side, you can make a 70 cm blade.

'Yes,' he said, 'but I don't know if I'll succeed. But I don't know if we'll succeed, so let's give it a shot."

　I went out to the mountain area on the fifth level and headed for the rocky hill. I decided to try a new way to use the "Crash Ball" by heading to the rocky mountains.

　Approaching one hundred and fifty meters from the rock pile, he first activates it by imagining two D-particle vibration balls side by side in a dual activation.

Ah."

　The timing of the D-particle vibration ball starting to fly was off. If it were originally a multiple activation, control would be easy since they are superimposed and integrated, but I found that this method requires practice.

　After an hour or so, I could control up to three D-particle vibration balls. Looking at the marks where they hit the rocks, I saw three holes about ten centimeters across.

'This might be enough to defeat Vritra.

If it hits in the middle of the torso, I can finish it off, but if I can't control at least the quintuple activation, I don't think it will work against Vritra."

　After two hours of practice, I was able to control five D-particle vibrating balls. I think the reason I was able to control them in such a short period of time is because I am a wise man who is good at controlling D-particles.