Reborn As A Ghost: Time To Build My Undead Army!

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A small spherical jewel shined brightly with black light within the dungeon's depths born from Lucifer. It seemed to sense that its connection to its major provider of energy and miasma, Lucifer, has been suddenly cut.

Feeling alarmed, the Dungeon Core decided to quickly spend almost all of its saved-up energy and summon a new Dungeon Boss to protect the Dungeon, as of it was by instinct… It needed to protect itself! After all, a being so strong that it divided it from its main power source, Lucifer, just appeared. So, of course, it needed to retaliate. It needed to fend off such a threat before it could endanger the life of the dungeon core itself!

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TRUUUUMMM!

However, just as we were walking upstairs, a tremor shook the walls. An enormous magic circle emerged on the floor where Lucifer's corpse was, and… a gigantic figure began to be summoned from it.

No way…

We glanced at the beast being born. It seemed around ten meters tall, and it had four heads, with long necks wriggling around like snakes. Its body was coated in black scales, and each head had eyes with different colors… It had a bright jewel on its chest, four limbs resembling those of a lizard, and a short tail.

To say the least, it emanated a deadly presence…

[Dark Shadow Hydra: Lv10] [Rank: D+] [State: Wrathful]

Ugeh… D+ Rank?!

"We better escape!" I shouted.

"I agree. Although we could get stronger by defeating it, it's not worth the risk!" Lucifer added.

"Meow!"

Call us cowards or whatever. I don't give a damn!

We quickly began to rush upstairs, but suddenly…

"GGRRYSSHAAAA!"

The giant Hydra seemed angry that we began to cowardly run away, as it extended one of its necks way farther than what should've been possible with its length and caught Lucifer with its jaws!

"Ugh…! Damn it!"

FLAAASH!

Lucifer was dragged down as he quickly exploded into phantasmal smoke, transforming into his dragon form once more!

"Ugh, damn it! Alright then! I will slaughter you if you want to die so badly!" roared Lucifer, as his claws began to slash through the Hydra's jaws and heads while his phantasmal breath burnt through its body.

However, those scales looked tough. They were barely taking much damage! This was because the Hydra had the [Reflective Scales] Skill which had the power to reflect a part of any type of elemental damage, effectively negating an amount of the damage taken. This made even Lucifer's powerful attacks not that strong.

"Maaoooo!"

Kuro suddenly charged downstairs without even asking me what we had to do. His feeling of companionship with Lucifer had developed quite quickly!

"Fight!"

Partner coated her spear with her mana as it began to exude a large quantity of venomous aura from within.

I guess we are fighting then…

ALRIGHT!

"[Mana Siphon], [Life Drain]!"

We quickly jumped into battle, and as we were all Undead, we began with [Life Drain], slowly draining the life of the Hydra from all sides!

"GGRYYSHAA!"

Lucifer acted as the main tank, being the only one capable of taking the hits of such a gigantic beast.

"RRAAA!"

SLASH! CLAAASH!

Lucifer slashed through the Hydra's necks, however, the Hydra used one of its heads as a weapon, attacking and hitting Lucifer's head with it! I never knew they used their heads in such a way…

Meanwhile, as I constantly drained its Mana slowly, I began to conjure all I had! Dark Spheres emerged one after another in groups of four, clashing against the body of the Hydra, completely bombing it. Dark Gales concentrated into a large vortex of slicing dark winds, attacked the Hydra's heads!

BOOM! BOOM! BOOM! BOOOOMMM!

"GGRYYAAAARR!"

Despite its [Darkness Resistance] and [Reflective Scales] skills, the beast seemed to have taken some damage from my attacks. This was probably because my Dark Attribute Damage even has bonuses from my equipment, and those bonuses might had canceled out the damage reduction of its skills to a certain extent!

Partner used her spear to move gracefully around the battlefield. She began to pierce the Hydra's limbs with [Spear Thrust] and injected deadly venom into the open wounds. Although it didn't seem as effective due to the beast's [Poison Resistance], but at the very least it wasn't a full-on immunity, so there was some slow damage per second that ticked away at its health!

"GRAO!"

Kuro roared fiercely like a lion as he began to fire fireballs, water bullets, and thunderbolts towards the Hydra, bathing it with multi-elemental damage. It wasn't as strong as the rest of us, but Kuro was doing his part! However, the Hydra was a strong D+ Rank monster. It wasn't going to go down easily!

"GGRYSHA!"

Although Lucifer was bothering its movements the most, it suddenly glared at me with three of its heads!

FLASH!

All three heads' eyes flashed with bright lights, as a storm of elements befell upon me!

TRUUUMMMM!!!

Lightning, wind, and fire reached me as the Hydra utilized its powerful Skill [Instant Casting] to conjure [Fireball], [Thunderbolt], and [Wind Gust] combined into what seemed to be a destructive storm of elements.

I barely managed to dodge, but the powerful attack clashed against the wall behind me, and some of its shockwaves of elements reached my phantasmal body, damaging me. My HP almost hit zero just from the after-effects of the deadly combination. Imagine if that thing had hit me head on!

My HP began to slowly come back to me through [Life Drain], but the monster's HP was rather high, and disappointingly, it had yet to reach 50%.

"Be more careful!" Lucifer shouted, reprimanding me.

"Well, we wouldn't be fighting this thing if it wasn't because you got so easily caught!" I shouted back.

"W-What did ya saaayy?!"

CLAASH!

The Hydra suddenly hit Lucifer's head with a bonk! But Lucifer retaliated with a roar, releasing his phantom flame breath towards the beast's eyes.

"GRRRYYAARR…!"

Right… its eyes! If it does not focus its eyes on something, it can't conjure magic precisely…

"Use your claws to slash their eyes off!" I shouted.

"The eyes… right!"

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