The Protagonist's Sister Is Actually The Strongest

Ares, the God of War in Greek Mythology. From all Greek Gods, I never expected him to even look at me. But he is indeed a rather prevalent sponsor. From my very nature, it seems that something caught the interest of this war-loving madman. Somehow, I’ve got him to give me a small quest in exchange for bloodshed. And fine, sure, I’ll give you the bloodshed you want; after all, that’s what I want to do anyway.

I pointed my index finger at the dead half-beasts, imbuing Mana into their corpses.

“{Rise}!”

[The Effects of the [Ruler of the Dead (S)] Skill have taken effect!]

[The Corpses of the Dead had taken your Mana and Ki as sufficient sacrifices for their temporary servitude!]

There was no way I was going to miss these guys. Suddenly, two of the half-beast demonic humans that were lying on the floor, one of them poisoned and the other bitten by bugs, stood up, their rotting bodies emanating a powerful mix of demonic energy and death energy.

[The Souls of the Dead seem to have a strong grudge and request that you settle it down!]

[A Brand New {Quest} has been generated: [Kill the Demonic Humans that forced them to become Monsters!]

[Description: Unlike you thought, the souls of the dead are furious that they were eaten by the Demon Leviathan. They became Demonic Humans against their will and were forced to do so by the other evil Demonic Humans with them! Their quest? Simply slay them!]

[Condition]: [Kill all remaining Demonic Humans.]

[Rewards]: [One Random Skill that once belonged to these two Demonic Humans.]

[Failure]: [A Curse by the Demonic Human Souls, which still lie within the belly of Leviathan]

Wait, what?! So this is how it works! I guess I got two Quests that are literally the same then, heh. Nice. Time to butcher them alive then.

”Fenrir, don’t kill them! Restrain them for me!” I ordered Fenrir.

“What?! Are you crazy?! Do you want to interrogate them or something?!” Fenrir asked angrily while evading one of the demonic humans’ attacks.

“Just trust me, pretty please?” I asked with angelic eyes.

[The Effects of [Little Sister (F): Lv4] and [Let’s Be Friends! (F Rank Privilege)] have activated together!]

[Fenrir has a good impression of you and seems to trust you better.]

“Fine! Whatever you’re planning, do it quickly!” Fenrir sighed, quickly unleashing his shadows to restrain the two other Demonic Humans he was engaging.

Meanwhile, the Giant Glacial Wolf Undead, and Violet were fighting most of the monsters by themselves. They had already slain a pack of Glacial Wolves and were still fighting the incredibly tanky Giant Polar Bear Tyrant and the other Giant Glacial Wolf, though both seemed to be winning slowly yet steadily.

“{RISE}!”

[The Effects of the [Ruler of the Dead (S)] Skill has taken effect!]

[The Corpses of the Dead had taken your Mana and Ki as sufficient sacrifices for their temporary servitude!]

I also took this opportunity to raise the rest of the Glacial Wolves that got killed immediately. My Mana wasn’t endless, though, and each summon took a nice chunk of my Mana, but Ruler of the Dead had a nice special effect.

[The Souls of the Dead that have been raised by you and were defeated have shown their gratitude to you thanks to your [Death’s Little Sister (B Rank Privilege)]!]

[Some of their Magical Power has flowed back into your body.]

[You’ve restored a large quantity of MP!]

[The [Ruler of the Dead (S)] Skill has leveled up to Lv2!]

[Risen Undead now will obey your commands much better.]

[Risen Undead now has higher stats.]

[Risen Undead now lasts much longer at your side.]

[You can now absorb a part of the souls of the foes you defeat to strengthen yourself even further.]

The souls of the many bugs that were destroyed came back to me and fueled me with their leftover magical power. Like this, I easily restored over half of my almost empty MP in a single second. Heh, being a necromancer is really nice.

Stolen content warning: this tale belongs on Royal Road. Report any occurrences elsewhere.

“You fucking little bitch! Stop raising the dead like it’s a piece of cake!”

The wolf half-beast leaped at me savagely, suddenly conjuring Fire Magic. Two enormous fireballs were flung directly at me as I used the giant shield to defend myself. However, the bastard gave a U-turn and suddenly reached my rear, materializing a spear of flames and pointing it at my head.

“HAH! I gotcha! DIE!”

“GRAAAARRGH!”

“GRUOOOHHH!”

However, a Bear half-beast and a Dog half-beast, both Undead, leaped over the wolf-faced one and restrained him, grabbing his arms and taking the whole fire spear to their faces.

BOOOM!

“Unnnggh?! You damn bastards! How come your wills are so weak that you become slaves to her so easily?! Have you forgotten your contract with Lord Leviathan already?!” The Wolf roared.

“Leviathan… HATE!”

“GIVE OUR SOULS BAAACK!”

The two zombies were fucking angered, beginning to bite the shoulder and neck of the wolf half beast as I used this opportunity to imbue Sunshine into my Dragon Tooth Dagger, and then leaped straight for a piercing blow against my opponent’s chest.

FLASH!

A red aura of war and bloodshed was activated from within the necklace I was wearing, which had a red-colored gem on it imbued with a tiny bit of the power of the God of War Ares; of course, this was his gift from last time… [Warrior’s Necklace]!

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[Warrior’s Necklace]

{Item Type}: [Magic Accessory] [Magic Necklace]

{Item Quality}: [C Rank]

{Item Requirement}: [250+ STR]

{Item Durability}: [950/1000]

{Item Effects}

[HP]: [+150] [STR]: [+150] [VIT]: [+150]

{Item Abilities}

[Warrior’s Stigma]:A Necklace created using a Bloodshed Jewel made by using the blood of a thousand fallen warriors on an ancient battlefield. When activating this Necklace’s effect using Mana and -50 Durability, it is possible to increase the wearer’s HP, STR, and VIT Stats by +30% for 10 Minutes.

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[The Effect of the [Warrior’s Necklace]’s [Warriors Stigma] has been activated!]

[For ten minutes, your HP, STR, and VIT have increased by +30%!]

The reason why I couldn’t equip this earlier was because it had an insane STR requirement, but now that I more than met it, it was time to use it.

“Get away from me!” The wolf bastard panicked, just before my dagger pieced his chest and sliced his skin, bones, and flesh apart. The rest of his body was covered in flames from my venom creation’s gasoline-like venom reacting with my dagger’s fire.

BOOOM!!

He obviously exploded into pieces.

“Now.”

I quickly glanced right behind me, as I saw a rat-faced half-beast trying to run away from the scene. He immediately noticed when I glanced back at him and simply started running away faster.

“Oh no, you’re not going anywhere! {Rise}!”

The wolf I just killed suddenly rose once more; his entire body was still in flames, so he became a Blazing Werewolf Zombie, nice name.

“Catch him.”

My three Undead Demonic Humans roared wildly, catching the rat man in just five seconds and dragging him back to me. Of all the half-beasts, the rat was the weakest.

“P-Please spare me! I am not that evil! I have only killed... a few people!” He cried.

“Yeah,” I said with a smile. “May the Gods forgive you, because I won’t.”

I pierced the rat’s chest with my knife and crushed his heart before he could attack back. He died while giving a loud rat-like squeak. Seriously?

“{Rise}”

A phantasmal soul took over his body as he rose in mere seconds.

“See? Now you’re part of the good guys.” I giggled.

Fenrir was watching what I was doing the entire time while I incapacitated and caught the other two Demonic Humans, his jaws were completely open in shock.

“Y-You’re one little demon…” He said it in surprise. “Hah! I guess you’re really your brother’s sister!”

“Yep… Now let’s finish this.” I smiled back at the two low-ranked Demonic Humans, who were screaming on the floor. Fenrir ate their legs so they wouldn’t be able to walk away.

“Please spare us! We’ll tell you anything you want!”

“W-We are merely low-ranked demonic humans! We are trash that was sent to hunt the people… If you kill us all, our leader will chase you out.”

“Leader? You mean Rick?” I wondered.

“N-No, Rick’s super strong, but he’s not our boss…”

“Our Boss has yet to come here; he’s looking for something else!”

The Boss of the Leviathan Demonic Cult is here too? What in the world? Isn’t he secretly an A-rank hunter? If we meet him and fight him, things won’t end as well as they are right now. Hell, I might get killed...

“I doubt a savage like him would be up for negotiations anyway.” I sighed. “Stabby stab time~”

“Uuuaaggh!”

“Gryyaagh!”

With both dead and both risen as Undead, we joined the fight with Violet and the Wolf Undead and successfully defeated all the monsters. Even the strong Bear and the damn Giant Glacial Wolf were taken down eventually.

[Calculating EXP…]

[You earned a total of 76500 EXP]

[Level Up!]

[Level Up!]

[Level Up!]

[Level Up!]

[Your Level has increased from Level 17 to Level 21!]

[All Your Stats have increased.]

[You earned Skill Points and Stat Points.]

[The Level of your Tamed Monster: [Violet] has increased to Level 20!]

[Several Constellations Praise Your Accomplishment!]

[They Have Sponsored 600 Plot Points.]

[You have Completed the {Special Quest}: [Mercilessly crush all the Demonic Humans with your own strength!]

[You Received The Following Rewards]: [Spartan Army Commander (B Rank Privilege)]

[The Cosmic Throne {Warrior That Seeks Calamity} is amazed at your mercilessness despite looking like such a frail and adorable little girl. He is satisfied for now but expects more thrilling battles and bloodshed in the future.]

[He has further sponsored 1000 Plot Points.]

No way! I got the Spartan Army Commander Privilege?! It will go so well with my Ruler of the Dead Skill!

And also…

[You have Completed the {Quest}: [Kill the Demonic Humans that forced them to become Monsters!]

[You Received The Following Rewards]: [One Random Skill that once belonged to these two Demonic Humans.]

And the random skill—I wonder what it will be...

The Undead Demonic Humans seemed to smile as they suddenly started to fade away into ashes. It seems they were finally able to rest in peace; even the guys I mercilessly killed are just puppets of the Demons.

Once their souls are sold to them, it is game over, and it could be said they might not even be truly “alive” anymore, as their very minds are driven to insanity until a human no longer exists, just a beast.

Their leftover energy flew into my body and then materialized into a new power, which flowed into my soul the same way the power of this new Privilege did. It was so intense that it felt rather overwhelming.

[You’ve inherited the [Half-Beast Demonic Transformation (B): Lv1] Skill from the Relieved Souls of the Dead!]

Oh, that’s not what I expected.

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