"The Netherworld's Holy Grail…"
Sawada Tsunayoshi opened the Record Book. As he gathered every scrap of lore in his mind, a pure-gold chalice took shape across a fresh page, neatly filed under Armaments.
"That cup really does twist life and death—not just by governing life, but by reversing causality itself. Inverting cause and effect to pull the dead back."
"And 'Netherworld' in the island nation's tales points to Yomi—another stratum of space."
"Put together, the name is literal: a key to Yomi."
"That tracks with a power that overturns causality and the state of life and death."
He deconstructed the Holy Grail of the Netherworld's name on the page, then committed the notes to the Record Book. If a construct's logic held, the book would accept the design and the result could be summoned at will in the future. If it didn't, the diagram would simply refuse to burn in.
Simple magic beasts didn't need airtight logic—single-purpose tools rarely suffered from interference between complex abilities. Only intricate artifacts demanded strict coherence. He'd learned that the hard way: when he made the Lv. 7 "Silence," the build had collapsed. A shortfall of imagination—and structural bugs inside the design—had torn it apart.
The real bottleneck was always imagination.
"Got it."
Excitement lit his face as the book yielded a gleaming gold grail. Below it, crisp marginalia spelled out the functions.
"Interference with space and cross-dimension strata. Interference with fixed causality. Accumulates life energy and soul fragments."
"In short: a tool that can reverse life, causality, and even spatial relations."
"Which means… if it can meddle with space, can it help me lock onto a coordinate?"
The thought struck like a spark. If the Grail could touch space and strata, then maybe it could sharpen his sense for a planted coordinate.
He moved at once. As long as he didn't use the Grail to resurrect anyone, he wouldn't draw divine eyes. No reason to make things hard on himself.
A gold cup—shaped like a wine goblet—bloomed in the air before him. He took it in hand and gave it a small tilt; from empty glass, a dark scarlet liquid slowly welled up.
"Life energy, hm?"
That part would need proper testing later. For now the question was simple: could the Grail boost his read on a faraway spatial mark?
Tsuna closed his eyes and reached toward a coordinate in another world.
The Grail in his hand gave off a faint light.
And the coordinate that had always hovered just at the edge of awareness snapped into focus.
"It works."
Before, limited by his own strength, he could only catch a fuzzy direction, a ghost of a mark. Now, the position was clean and steady—no longer a rumor, but a fixed pin.
"Clear. Stable."
The realization thrilled him. It was like finding a lighthouse through fog—one bright point labeled "home."
"The Grail's spatial interference is the real deal."
"It's basically a signal amplifier—boosting and stabilizing my lock."
"Huge help."
Clear, steady sensing meant transit was already on the table. He forced the excitement back down.
Calm. The stability only exists because of the Grail.
He steadied himself. There was no need to rush. Once he'd confirmed the coordinate and verified time over there was still at the point he left, he could be patient.
"First finish the Joint Expedition. Break into Lv. 3. Then think about going back."
Order mattered. The expedition had been long in the making; it was the priority. And if he returned stronger, his lock would be stronger too. There was never a downside to more power.
As for what came after—he refused to get ahead of himself. There would be too much to confirm once he was home, and none of it could be planned from here.
Some preparation, though, was worth doing now.
Like building a magic beast tailor-made for electronic infiltration—or better yet, a magic-beast computer—capable of cracking networks for him. In a world wired end to end, information could be pried loose if you had the right teeth. Mafia dossiers, hidden caches, the stones that could kindle Dying Will Flames—if he wanted to avoid using his own identity to seek them, he needed a clean, reliable pipeline of intel.
Decision made, Tsuna dissolved the Grail and turned the Record Book's page.
"Perfect. I've got time today—let's create a beast for data capture."
(End of Chapter)
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