Molars

A cube-shaped container with a side length of half a meter.

There is an open, unsealed membrane opening at the top, just big enough for an arm to fit through, suggesting that the project can only be completed by one person.

The liquid inside the container, bubbling with question marks, was something neither Luo Di nor Tooth Child had ever seen before.

Not only them, but even many of the monsters who had lived in the corner for years or even decades as viewers had never seen such a liquid before, and could feel the danger even just through the camera lens.

Having passed through the first room, Luo Di could basically conclude that the liquid associated with the question mark was definitely related to lethality.

The Tooth Child stood in front of the stone platform, his head level with the container.

Staring at the solution inside, he lowered his voice and whispered:

"It probably can't be broken..."

Luo Di responded from the side, "If breaking it would allow us to retrieve the key, then this level would be too easy. Of course, it's possible that it's that easy, but the probability is very small, and we can't take the risk."

If this liquid were to be exposed, we could all die, or something even worse could happen.

The letter uses a very standard word "take", we have to find a way to take it out. "

The Tool Construction.

Two scorching metal rods grew from Luo Di's left hand, while he manipulated them with tentacles growing from his right hand instead of holding them directly, to prevent the liquid from being some kind of living thing that could flow backward and contaminate his body.

Completely focused

Carefully insert the stick into it.

What happened next shocked Luo Di.

Let alone picking up the key,

The Iron Rod that just touched the solution instantly decomposed without a sound or any decomposition products. This was a complete annihilation; the solution itself did not even change color.

The time from contact to disintegration and annihilation is estimated to be no more than 0.1 seconds. Even if the speed is faster, it is impossible not to touch the key below.

Since force didn't work, Luo Di tried separating a highly adaptable tentacle.

However,

Although the gray tentacles were separated, they still retained certain biological instincts. When they approached the container, the tentacles showed a strong resistance and curled up like squid tentacles.

Luo Di could only consciously control his tentacles to straighten the moment they touched the liquid.

Sizzle!

Unlike the previous instantaneous annihilation of the metal rod,

Upon contact with the liquid, the tentacles trembled initially, and numerous question mark-shaped bubbles appeared on their surface. As the epidermis dissolved, they subsequently vanished completely.

It can hold on for a little longer, but it's still not enough to touch the key at the bottom, let alone take it out.

"Biological structures last longer than metallic structures... does that mean we're being encouraged to reach in and grab them?"

"I'll give it a try."

The Tooth Child volunteered to try, and even imitated Luo Di by separating a bunch of teeth, including incisors, canines, molars, and so on, and threw them all into the container room.

Similar to the case of tentacles,

In biological teeth, air bubbles first appear on the surface and then quickly disappear, with the hardest molars disappearing the slowest.

"Mr. Di, I have an idea... I don't know if it will work."

"Speak."

Tooth Child seemed somewhat shy during the conversation, always keeping his head down, which puzzled Luo Di. Logically speaking, a monster that had reached the final level couldn't possibly be so 'naive'; it was most likely an act.

However, Luo Di, who had lived with the class monitor for so long, could not detect any trace of pretense in him.

"Um... the choice in the final level corresponds to two outcomes,"

Cooperation and battle

We've chosen to cooperate here, so does that mean we need to work together to get the key...? That's what I'm thinking, but I don't know if it's right.

How do you want to cooperate?

"My teeth are special; I can fuse into your arm, providing multi-layered structural reinforcement. Then you can take out the key below as quickly as possible."

"Um..."

Tooth Child's words made a lot of sense, and Luo Di agreed, but he didn't immediately agree.

Tooth Child seemed to have figured something out. "Mr. Di, if you don't trust me, could you detach a few more tentacles and stick them to my hand while I go get the key?"

"Let me think about it."

"Oh." Tooth Child sat obediently to the side, waiting for Luo Di to give the result.

Looking at the Countdown with just over twenty minutes left, Luo Di made a decision—not to take the key, but to have a "simple conversation" with the monster.

"May I have your name?"

Seeing that Luo Di had started a conversation, the Tooth Child straightened up and looked over. "I don't have a name... The boss and the uncle who bought me both call me ' Tooth Child '."

Did you not have a name when you were still human?

"No, my memories are stuck in a corner, stuck in the time when I was locked in a cage. All my previous memories are gone, I only remember that this bracelet is very important to me, and the teeth on it must have been left to me by someone very important."

"Huh? The corner has lost all its previous memories?"

Luo Di guessed that it was likely a tactic used by slave traders to facilitate management, but it was also possible that the other party was lying.

"Can I examine your brain? I don't really trust you, because we're competitors in this game, and we'll inevitably have to fight each other in the end."

"It can be checked."

Luo Di never expected the other party to agree to a brain examination.

It's important to know that the core pituitary gland of most monsters is located in the brain region. Letting someone else touch this area is tantamount to voluntarily handing over one's life.

Since he agreed, Luo Di didn't say another word.

He stood up and went to the Tooth Child with his palm on his forehead. Upon touching him, he discovered that even the boy's skull was made of densely packed teeth, making it indestructible.

Tooth Child was completely unprepared, allowing the tentacles to burrow into his brain.

"Um?"

Luo Di was the first to notice the other person's peculiar pituitary structure.

A tooth-like plant is growing on the surface of the budding pituitary gland. It is formed by multiple teeth stacked together and has grown dental nerves to form a branching structure. It is estimated that it will mature soon.

In addition, it was discovered that the hippocampus and frontal lobe of the other person's brain were covered with a thin layer of fog, and it was this Thick Fog that caused his memory problems.

The tentacles detach.

Although the other party wasn't lying, Luo Di still had one question:

Why did you agree to let me examine your brain?

Mr. Question Mark only asked that we not kill each other. If I had malicious intentions, I could easily plant something in your brain so that I could gain the upper hand should we start killing each other.

Tooth Child calmly replied, "You're different from those other monsters who want to kill me; I can tell."

"Feel?"

Tooth Child rubbed his teeth together. "It's just a feeling. My teeth aren't reacting strongly to you, which means you don't want to kill me or have any intention of harming me."

In the previous levels, all the monsters that saw me wanted to kill me.

After establishing a simple trust relationship, Luo Di made a decision. "How do you want to attach yourself to my arm?"

"It's very simple, all you need to do is wear this bracelet of mine."

Click click click~

A sound of teeth clenching echoed in the space, and even Luo Di's teeth trembled.

In the blink of an eye,

The Tooth Child had vanished, leaving only the tooth bracelet on the ground.

Because of the brain contact just now, Luo Di completed a kind of Gray Mark, and he could feel that the other party's body had completely merged into the bracelet.

Luo Di chose to wear it on his right hand.

When the tooth bracelet touched Luo Di's wrist, snap! The teeth instantly took root in the flesh, deeply embedded, and the dental nerves began to spread rapidly throughout his arm.

Following closely behind,

Luo Di's entire forearm, including his palm, the back of his hand, and his fingers, was covered with molars, densely packed together with almost no gaps.

It might even trigger trypophobia.

Moreover, after the molars are formed, enamel continues to grow on the tooth surface, further reinforcing the outer layer so that Luo Di's arm is just the right size to fit into the container.

When such a tooth arm sleeve structure is formed

A neural connection also forms in the body.

Luo Di could feel the Tooth Child present in his arm, completely focused on the hardness of each tooth.

"Are you ready?"

"Alright, Mr. Di, you must hurry."

Luo Di approached the container, viewing the task before him as a swift and decisive killing.

call...

He had barely exhaled when his hand was already inside the container.

Bang!

The metallic key fell to the ground.

The small amount of liquid that splashed down was just falling onto the ground normally, without causing any corrosion, as if the liquid would become inactive once exposed to air.

Luo Di didn't immediately pick up the key.

Instead, he looked at his festering right arm, with a few blackened teeth still embedded in it...