Lucien’s heart skipped a beat, his breathing quickening.

There are so many evolution options! They all looked great!

But evolution had a failure rate.

So this depends on luck, or...?

The system popped up like a ghost.

DING! [With a suitable material and condition, the failure rate will drop sharply.]

An image unfolded in Lucien’s mind— like a 3D animation.

Corrosive liquid from the Slime King dripped onto a common slime.

Then—

Pyang!

[Potent Acid Slime] is born!

Its acid is now capable of corroding iron and steel!

Oho, so that’s how it is.

Lucien’s mind moved and his 360° vision zoomed into the slime dungeon.

There, the king and queen laid limp, still recovering from their injuries.

Seeing them, Lucien’s conscience ached, but the mini dungeon boss in Lucien’s mind scoffed.

—Weak....

Lucien’s inner soul twitched his lips and balled his fists.

You’re weak! Your whole family is weak!

Outwardly, Lucien patted his head and ordered,

"Use the Healing Pool at the back. Bring the other slimes along."

With his main dungeon’s energy at full percentage, healing these slimes wouldn’t hurt.

The other surviving slimes heard Lucien’s words and subconsciously kneeled into a pool of water, their eyes watery.

"Glurg!"

The lord is so kind!

All hail the lord!

The slimes left the bathroom and one by one, they sneaked to the healing pool in the backyard.

In just ten minutes, the slimes returned— finally no longer on the brink of dying.

Only then did Lucien clear his throat and speak firmly, his inner soul squirming with embarrassment.

"King. Queen. I need your saliva."

This...this feels shameless and cruel, but— he needed it!

The slime king and queen immediately rose from the ground, their green, poisoned body slowly turning back to blue.

"Glurg!"

My lord! It’s our honour!

Without any hesitation, the two slimes squeezed out their saliva and poured it into the crater.

Then, Lucien slid the air with his finger and a random mob slime was lifted into the air.

"G-glurg!"

The chosen slime was so nervous it almost fainted, but Lucien’s voice soothed it.

"Enter the saliva crater. I am rewarding your loyalty."

"Glurgg?"

The mob slime was tossed into the saliva lake and soon, a panel popped up in front of Lucien.

[A mob slime detected]

[Select the evolution path]

Lucien chose the [Potent Acid Slime].

The slime inside the pool instantly felt a strange energy pouring out of the dungeon, flowing into its body.

"G-glurgggg!"

A tearing pain swept over and the slime’s consciousness flickered, its body glowed in a twisted light.

In Lucien’s 360° vision, he could see the king and queen’s saliva slowly seeping into the slime’s body while the slime’s own saliva bubbled like a volcano.

The boiling liquid slowly formed a hard core at the center of the body, unmoving despite the raging liquid around.

The failure rate rapidly decreased from 10% all the way to 0%.

"Glurgggg!"

With a final cry, the light flashed and the mob slime stumbled out.

The moment it came out of the light, its blue body turned darker, becoming navy blue.

Its size didn’t change, but the ground touching its skin turned black, charred even when it didn’t touch the saliva yet.

DING! [Evolution successful!]

[Potent Acid Slime: 1]

Lucien’s finger pinched the slime and examined it.

"G-glurg?"

Hmm, it grew a core. With this, as long as the core didn’t break, it wouldn’t die so easily!

Its rank—

A status window appeared above the slime’s head.

[Potent Acid Slime

Rank: E]

The other slimes keenly felt the change in the mob slime’s body.

Although the aura wasn’t as suffocating as the giant slimes or the slime king and queen...

The mob slime became a towering mountain in other slime’s eyes.

Envy and jealousy poured out of the slimes’ eyes.

Glurg! T-they also wanted to become stronger!

Lucien could understand the slimes’ words and he slowly put down the newly-minted navy slime.

"Patience. Everyone will have their turns."

Since turning an ordinary slime into a Potent Acid Slime went smoothly...

How about trying other variants?

Lucien picked another mob slime— one without a core.

Then, he looked at the [Medicinal Gel Slime] option and his mind stirred.

Should he use the healing pool’s water? That should be enough, right?

Lucien’s mind moved and a blob of water from the Healing Pool disappeared, entering the slime dungeon at the bathroom’s void.

Splash.

The healing water swayed in the air, drops of water slowly entering the mob slime with a core.

Lucien immediately chose the second evolution path—

[Medicinal Gel Slime]!

Woongggg.

The slime glowed in a bright light, its body twisting.

"Glurgg!"

The corrosive saliva in its body slowly evaporates, replaced by the healing water.

Bit by bit, the healing water condensed, turning into a gel.

Then, the gel gradually hardened, forming a core.

The failure rate rapidly decreased from 30% all the way to 10%.

Just like before, the slime shrieked, the light flashed and it came out with a tumble.

DING! [You have successfully evolved a mob slime!]

[Medicinal Gel Slime: 1]

Lucien checked the slime and strangely, it didn’t spit out corrosive saliva anymore.

If anything, it spat out a blob of gel from its body and the gel emitted a medicinal smell.

It didn’t heal wounds right away, but it looked like it could be used for many potions and medicines?

So this one isn’t a combat slime but a resource one.

Lucien’s inner soul rubbed his hands excitedly.

This could be sold at the black market!

It would definitely make money— a lot of money!

Good, good.

Both slime variants evolved successfully and Lucien couldn’t help but look at the third variant for the mob slime—

The Healing Crystal Slime.

This one definitely could heal and maybe it could produce some kind of healing-related crystal...

Is the healing pool water enough?

Lucien had a feeling that it wouldn’t be enough when the system’s panel blinked and Mumu’s tenant status window popped up.

[Tenant Mumu’s Status]

Level: E-rank

Skills:

• Healing (E-rank)

• Mind purification (E-rank)

Lucien’s eyes widened.

Wait, Mumu leveled up? And he could use skills??

Only boss monsters had skills!

Is it because Mumu is his tenant, or is it because he’s the ’key figure’ mentioned in the system panel before?

Lucien wasn’t sure yet, but he finally knew what material he needed.

Mumu’s saliva?

Lucien’s invisible force gently lifted Mumu from the bed and summoned him back to the slime dungeon.

Mumu immediately woke up from his sleep, his eyes bleary.

"Muuuu..."

Is it you, bad uncle?

"Shhh. It’s me. Mumu, sorry to wake you up, but can you give me some of your saliva?"

"Muuu..."

Mumu nodded weakly and spat out.

His saliva didn’t have any corrosive traits anymore.

If anything, it glowed golden, like a sacred liquid.

Lucien quickly captured the saliva with his invisible force and brought Mumu back to the room.

Then, he picked a mob slime without a core, poured the healing water and dripped a drop of Mumu’s saliva onto its body before he chose the third variant—

[Healing Crystal Slime]

"Glurggg!"

Light flashed from the slime and its body absorbed both the healing water and Mumu’s healing saliva.

The failure rate rapidly decreased from 80% to 60%— and it stopped there.

Lucien gulped, his palm sweated.

C’mon, success, success—

The slime’s skin slowly hardened, turning into a crystal.

The corrosive water in the body turned into a glowing liquid like Mumu’s, just much dimmer.

Then, the liquid slowly formed a core— but what came out was a deformed core.

Tak.

The slime’s body trembled, its eyes slowly closed.

"Glurggg!"

The slime shrieked— and then fell silent.

Pyas!

The light flickered twice.

The slime plummeted from the light and a red panel popped up.

[Evolution fails!]

[Number of slimes: 99]

Lucien’s face changed.

What went wrong?

Bad luck?

Or— is he missing something?