Weakest Beast Tamer Gets All SSS Dragons novel Chapter 1133

The tower had spent the entire duration of his absence feeding itself…

It hadn't just passively siphoned ambient mana from the atmosphere. It had actively devoured the mutant creatures that blindly charged the perimeter, processing their corrupted flesh and cores with the exact, passive, carnivorous hunger Ren had deliberately woven into its architecture.

It was massive now, and also terrifyingly thick.

The wooden roots that Ren vaguely remembered leaving as medium-sized structural anchors had engorged themselves. They had thickened into massive, iron-hard trunks that burrowed deep into the blood-soaked earth.

The entire structure radiated a heavy, predatory presence that it absolutely hadn't possessed at this level the day Ren built it. It looked less like a guard tower and more like a massive, hungry beast waiting in the dirt.

The moment Ren reported for duty, command immediately pinned a merit badge to his chest.

Because that single tower, operating entirely alone, without a human operator, without a single drop of extra mana than his initial investment, had been systematically slaughtering the mutants approaching their sector for days.

When the Wall's logistics officers finally ran the kill-count mathematics, the final number was impossible to ignore.

The autonomous structure had reduced the total volume of creatures successfully reaching their sector of the Wall by around half.

Half.

And it had done it while Ren wasn't even there…

Even when Ren desperately tried to hide in the shadows and keep his head down, his sheer existence inevitably proved far too useful for the world to ignore.

The bureaucratic result was official, and it arrived swiftly. Ren was immediately promoted to the first true rank of military leadership on the Wall. He didn't get it for an act of suicidal bravery in frontline combat, nor did he get it for tenure. He got it because he had almost single-handedly deployed (and secretly also engineered) a self-sustaining, autonomous meat-grinder that successfully defended the kingdom 'while he slept'.

Sergeant Vehn signed the promotion paperwork with the exact same relaxed face he applied to everything else. But as he handed the signed document over, the veteran officer leveled a long, heavy stare at Ren. It was a gaze that lingered exactly one second too long. It was the calculating look of a man silently archiving a puzzle piece that didn't quite fit the narrative of only "a fairly dense management class".

Ren accepted the promotion with a perfectly neutral, unreadable mask. He didn't want a single ounce of extra attention.

But internally, his mind was racing.

'The tower works, we need to make many more…'

It didn't just work; it functioned better than his calculations had predicted. And if a single, isolated tower could execute that level of automated slaughter in a relatively quiet sector of the Wall, the defense implications were staggering.

What would happen if he deployed dozens of them? Hundreds? If he placed them in the most violently contested "red zones". allowing them to feed and grow exponentially without risking a single human life?

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