The Boy Who Walks Beyond The End-Chapter 91: Underground Training.

The academy's halls buzzed with a hollow silence. Most students were still away on break, and the air carried a certain stillness. Yet Zen walked with purpose—each step echoing softly as if the very walls remembered his return.

He stopped near the hidden stairwell at the edge of the northern courtyard. Few knew it even existed.

> [System Nex: User, I found a underground training center in the academy, You now have access to the Obsidian Hollow—a forbidden training field beneath the academy. Would you like to enter?]

"I assume I don't get a fruit basket with that."

[System Nex: You get the possibility of death and a 15% stat increase if you survive.]

"Charming."

With a nod, Zen descended.

---

Obsidian Hollow – Underground Combat Chamber

The ground was cracked obsidian. Walls dripped with black moss, the air thick with unseen presence. Wisps floated like spirits without names. But Zen wasn't here for sightseeing.

He closed his eyes.

Shade Memory activated.

And the world changed.

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Lines of motion—phantom echoes—danced before his vision. They weren't physical, but traces... like muscle memory not his own. As if someone else had fought here before, and left behind a whisper.

From the darkness, three shadow beasts emerged—jagged limbs, flickering eyes, crawling low like beasts forged from nightmare.

> [System Nex: Combat begins. Limit test initiated.]

Slash. Dodge. Pivot.

One beast lunged. Zen didn't see it—but his body moved.

Shade Memory pulsed.

His sword met the shadow's limb mid-air. No thought. Just reaction.

The second beast struck from behind—Zen spun, combining Chronofreeze with Sword Slash. The time bubble froze the creature mid-lunge, and his blade cleaved through its skull with eerie precision.

> [System: 1 Shadow Entity Defeated. Eligible for Summon.]

[New Slot Available – Shadow Skeleton (Slot 2)]

As the skeleton formed from blackened bone beside him, Zen didn't even flinch.

---

The third beast lunged

The creature screamed and pounced.

Zen's eyes flared. He whispered two words:

"Zero Break."

A devastating vertical cut split the shadow in half—Abyssonox style, pulsing darkness through the blade like lightning through the void.

The Hollow trembled. The shadow fell. Silence.

> [System: Shadow Entity Defeated. Eligible for Slot 3 Summon.]

[Skeleton Summoned – Shadow Cloak Skeleton (Slot 3)]

[Title: Bone Reclaimer - Passive Energy Conversion Active.]

Two new skeletons now stood beside Zen—each uniquely shaped, cloaked in black flame and bone.

---

Zen,stared into the darkness where the beast had vanished.

[System Nex: Time's ticking. Exit the underground chamber now, unless you want a dramatic explosion ending.]

Zen turned back toward the entrance.

No more delay. It was time to prepare.