Weakest Beast Tamer Gets All SSS Dragons

Where the Mantis had succumbed in seconds, Ren remained conscious.

His own spore, the “world’s weakest beast,” pulsed with light, as if it were… fighting.

Every effort was agony.

He pushed himself upward, his fingers finding the hole’s edge just as his knees threatened to give way. The light blinded him momentarily as he crawled out of the tunnel.

It wasn’t the outside.

He emerged into a small natural cave, its walls covered in bioluminescent crystals that bathed everything in an ethereal, spectral blue light.

But he could barely appreciate the chamber’s beauty, the ancestral fungi continued spreading, consuming his vital energy.

“Please…” he whispered, his vision blurring. “I don’t want to die here…”

His spore fought valiantly, its own mushrooms creating barriers against the yellow infection, but it was losing the battle. Ren could feel his consciousness fading, his body growing colder by the second.

That’s when he saw it.

In the cave’s center, bathed in crystal light, grew a plant that seemed like… it reminded him of the one on his father’s stories.

“The plant…” he mumbled, crawling toward it as the yellow fungi continued their spread. “The one that helped Mother…”

His fingers brushed the luminous stem just as darkness began claiming the edges of his vision.

With trembling hands, Ren pulled the glowing plant free. The yellow fungi still expanded across his body, but something in his mind, something deeper than conscious thought, told him this was important.

This plant was…

Though he didn’t fully understand.

His father had found one like it, almost 12 years ago, in another tunnel. The “miracle medicine” that had allowed his mother to conceive.

But this one was different, where his father’s plant had been firm and robust, this one was delicate and ethereal.

This was the “female”, his father had found the “male”.

With the ancestral fungi consuming his last strength, Ren brought the plant to his lips. The taste was like liquid light, like remembering a dream.

And then he felt it, a deep resonance with something already existing in his body, dormant genes inherited from his mother, the echo of the other half of the medicine that had made his existence possible.

The two halves of an ancient medicine, separated by years and tunnels, finally reunited in his blood.

The effect was instantaneous.

Pure white light emanated from his skin, so intense that the yellow fungi recoiled, withering and falling like ash.

His spore, that supposedly useless creature, began pulsing with a new rhythm, perfectly synchronized with the energy now flowing through his veins.

To any observer, the spore would have appeared exactly the same, small, apparently weak. But Ren could feel that something had fundamentally changed within.

As if it had evolved into a completely new variant, one that no one had ever seen before.

What Ren didn’t know, what he couldn’t know, was that he had just completed an ancient recipe, a medicine that required three specific ingredients: the male plant, the female plant, and something unique, a host born with the first half of the formula.

He himself was the missing key.

The mushrooms in his hair returned to their usual color, giving the impression that nothing had changed. But in the depths of his being, a dormant power had just awakened.

A power that would change everything.

♢♢♢♢

Hunger awakened him first, a ravenous void that made his hands tremble as he pulled the bread with stew from his backpack.

He ate desperately, savoring each bite as if it were the first food he’d ever tasted.

The mushrooms in his hair shone with a stronger light than before, illuminating the cave crystals with dancing shadows. Ren noticed, but he’d survived too many horrors that night to worry about such a small change.

As he chewed the last piece of bread, the reality of what he’d done began to hit him.

He’d been seconds from death, multiple times.

If the Moon Toads had caught him… if the Excavator had found him… if the Mantis… if the spores…

His parents. What would have become of them if he…?

“I should go back,” he murmured, guilt weighing heavier than exhaustion. “This was madness. I…”

Return.

The voice was so soft at first he thought it was his own mind. But there was something different about it, something ancient and wise that resonated deep within his being.

And then it began.

As if someone had opened a floodgate in his mind, knowledge began to flow.

He saw his spore, not as the weak creature everyone despised, but as something with infinite potential. He understood, with crystal clarity, every step necessary for its cultivation:

The exact way to feed it different types of fungi. The precise cultivation to strengthen the bond. The correct sequence of evolutions. The bifurcations in its path to power.

But it didn’t stop there.

The Mirror Mantis, he saw how its plates formed, how it channeled light and mana, the weak points in its exoskeleton where cracks always began. Its life cycle…

The Night Excavators, the way they built their tunnels, the patterns they followed, how they conserved energy during times of scarcity…

The Moon Toads, the mechanism behind their hypnotic eyes, the exact composition of their acid, the mating rituals that determined their hunting patterns…

The ecology and biology of the creatures he’d encountered became clear to him now.

It was as if he could see the invisible threads connecting all creatures, understand their most intimate natures, their strengths, their weaknesses, their secrets.

“What… what is this?” he whispered, overwhelmed by the avalanche of information.

The mushrooms in his hair pulsed softly, and for the first time since obtaining his spore, Ren felt he could see the path before him.

Not just his own.

All creatures’ paths.