"Let's go, Raphael."
At my sister's signal, we rushed towards the Abyss Slime in the form of a goblin. With the naked blade grasped by our right, we slashed it on the standing goblin. Sister decapitated its head, and I cleaved its waist in half.
"As expected, physical attacks won't work."
We stopped our feet and looked back at the goblin, still in one piece. The slices had already been closed and healed, and the goblin stood as if nothing happened.
"Playtime is over, you filth. Purple Lightning! Lightning Blade!"
"Infernal Flames! Thermal Blade!"
As Sister announced that, we unleashed our magical scorching blades. Purplish-white, dazzling, and blazing lights enveloped our naked swords. Our amethyst eyes glowed a pale purple, like the shade of the lightning streaks of the Attribute Armor enveloping our bodies.
Whoosh.
"Giii?!"
Enhanced by our lightning cloak, we dashed towards the goblin at tremendous speed, like there was no tomorrow. Sensing the dangerous approach, the goblin reflexively waved its left arm and drew an arc of black, corrosive slime.
We avoided the acidic black sludge by doing a sharp ninety-degree turn. I turned to the left, and Sister did the opposite. Then we shifted our tracks and did a U-turn to launch at the goblin again.
Being attacked on both sides, the goblin opened both hands and activated an Acid Magic spell. Multiple greenish liquids in the form of a lance were conjured around the goblin, and it fired them in all directions at bullet speed.
Hizzzzzz.
As soon as the lance met my flaming blade, it instantly evaporated due to its ridiculously high temperature. The collision of the Level 4 Acid Spear and my Sanguine Lotus made sizzling sounds like hot coal extinguished by water.
Realizing the uselessness of its attacks, the goblin poured a large amount of mana inside its body and imprisoned itself inside a massive sphere of lime juice.
"?! Get back, Sis! It's its maximum Acid Sphere powered by Steel Corrosion spell!"
"Hiih."
The goblin inside the sphere flashed a smug smile, seeing the effectiveness of its defense. Its annoying face is so irritating that I wanted to punch its face a thousand times.
The goblin surrounded itself with a massive ball of acid. Level 5 Acid Sphere is an offensive spell. Since Abyss Slime can invalidate corrosion, it can also be used for defense.
But the problem was the Level 8 Steel Corrosion spell. Just as the name implied, it was a spell that made the next Acid Magic spells more acidic, to the point where they could corrode even the noble mithrill steel.
Even though our blades can nullify the acid, our bare skin and gears cannot. If we just carelessly attacked it, the sphere would crumble and spill its contents all around the room.
"Then we have to attack it remotely."
"You mean that? If that's what you meant, I'm ready for it."
"We'll remove that annoying smug of yours."
"Hihihi."
Sister suggested to execute a certain spell. The goblin just giggled at us, full of oneself as if saying, 'If you can'.
We leaped back for several dozen meters to avoid spilling acid in the process. To prevent the collision of our spells, we distanced ourselves from each other by around twenty meters.
We one by one turned off the Lightning of Attribute Armor and deactivated our magic swords to reserve our decreasing mana. Before I cast the spell, I have to increase its damage first.
"Blue Lightning."
I cast as we pointed my blade to the target. Since I can't activate the Purple Lightning yet, I cast an inferior version of it.
And then…
""Dragon Lightning!""
Upon casting a Lightning Magic spell, a massive amount of lightning-filled mana is released from our body. It clustered together, then began to materialize and take the form of a sparkling dragon, a Chinese dragon to be exact.
"Let's sauté this goblin in its own lard. Charge!"
On her lead, we raced our own electric dragons towards the goblin, which is still inside its acid asylum.
"Giii?!"
The goblin perceived the danger of the rushing dragons and tried to defend itself, but alas, my bluish-white writhing dragon strikes first.
"Gaaaa!!!"
The dragon of lightning passed through the liquid and electrified the goblin, but it wasn't enough to dispel the acid. After a second attack, still damaged from the previous attack, another dragon electrified the goblin. But unlike before, this purplish-white dragon had higher voltage and temperature than mine.
"Gwaaahhh!!!" That was the loudest cry that we heard today.
My sister's lilac dragon deals the most damage. Due to its soul-damaging attribute, the dragon managed to interrupt its skills and successfully cancel the spell.
The acid sphere collapsed on the floor and spread its contents on it. Inside the smoky acid spill, the goblin is on its knees, paralyzed by the dragons.
"If you thought it was done, you're absolutely wrong about that."
With the wave of my Sanguine Lotus, my blue-shining dragon devoured the helpless monster again. The goblin went into convulsions as if doing a strange dance. The strange thing is that my sister's dragon didn't follow my lead.
"Already out of mana?"
"Activating the Purple Lightning sucks too much mana."
"Here. Take that." I took out a small bottle from my Inventory then threw it at her.
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
Mana Potion - a potion that partially restores the consumer's mana.
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
"Good. All I need is to restore some strength. You better buy me some time."
I nodded at her request and continued to manipulate my Dragon Lightning. She crouchingly watches the battle as she recovers her stamina.
Dragon Lightning is a Level 9 spell and my current most powerful Lightning Magic spell. This spell doesn't stop after it hits its target.
It will stay active and can be freely maneuvered as long as there is mana. Sister only lasts a shot due to its lilac aura and insufficient mana reserve. Though she had much more mana than most people because of her absurdly high Level.
I didn't get a moment to watch the goblin move a muscle and continuously attack it lopsidedly. After about a dozen bursting fireworks, the charred goblin finally collapsed flatly to the surface.
I cancelled the Dragon Lightning and the Blue Lightning after the goblin dropped. But I know it's not finished yet.
After a few seconds, the grilled goblin returned to its former green hue at a tremendous rate. The goblin gradually raised its small body and then stood up straight. And Sister just came to my side in time.
"I'm ready, Raphael. Let's end it in an instant."
◆◇◆◇◆◇
With those words, two teens wrapped themselves in dazzling flashes of lightning and unleashed their magic swords. Their current appearances lit up the solemn scene and made it livelier when they began to move.
Daffodil and lilac streaks of light filled the entire half-kilometer-cubic room as the pair ran fast throughout the room. Engaging on the same target, they slashed their own blade in one after another.
"?!"
The goblin couldn't follow the movements of the pair. It was too fast that it didn't realize its both missing lower arms.
When it gazed at its burned and amputated arm, the goblin noticed that it decreased in length for every second the goblin stared at it. When it looked at the floor where it was standing, inch-thick chunks of burned flesh were scattered around the surface.
In other words, the siblings slowly chopped off its arms one at a time. The goblin tried to activate its prided Infinite Regeneration to heal itself, but nothing happened.
Upon realizing its fate, the goblin—no, the Abyss Slime—fell into despair. With knees on the dark gray stone surface, the monster let the blazing and dazzling blade of purple smite its own pathetic body simultaneously.
The dazzling blade of the girl in monochromatic style flew straight towards the monster's neck, easily decapitating it. The blade so cleanly sliced the head that it didn't get separated from the body before it dropped to the floor.
The waves of shining blades continued to chop the monster into pieces. The burned, chopped pieces turned back to their original form, the pitch-black slime, as they lost connection to the main body.
The blades finally ceased when the monster's existence was reduced to hundreds of black, viscous substances. Same as the feet of the attackers.
"Finish it, Raphael."
Following the girl's words, the boy raised two fingers, facing the scattered slimes. He gazed with his glowing amethyst eyes from left to right before he opened his mouth.
"Be my steeping stone. Infernal Fire Arrows."
Hundreds of arrow-shaped flames appeared around the boy. Each was around five inches long and had a Hollywood cerise hue. All of those are Level 2 Fire Arrows enhanced by soul burning Level 10 Infernal Flames.
"Shoot."
After he rotated his hand, the arrows flew straight at each of the blobs. Upon contact, the bolts quickly spread out and engulfed the blobs in a purple blaze. After a few seconds, the Abyss Slime finally lost its life.
◆◇◆◇◆◇
After the Abyss Slime lost its life, the mass and volume of the small blobs increased. If the blobs had merged together, it would have been equivalent to its former pitch-black massive blob.
When I heard the mechanical voice of the system and successfully plucked my desired skill, I extinguished the flames to avoid damaging the slimes further. I've seen the potential in it and intend to use it in the future.
"It's dead. Confirmed."
"Right before my mana depletes. Good thing we get rid of its acid."
"Yeah. If it wasn't for that, we would have killed it fast."
We weren't able to get near it and finish it immediately with our blades since it was protected by corrosive acid. Because of that, we were restricted to only attacking it from a distance, but managed to get rid of its shield and finish it in close combat.
"Sigh. Let's get home after claiming our rewards. We'll decide what we're gonna do next now that the conquest gets rocky."
We got home safe and sound after I deposited a bar of orichalcum ingot.