Coincidentally, he still had The Claw of Hermos in his hand.
Of course.
After considering the possibility of using twelve different Fusion Monsters ranging from LV 1 to LV 12 for "Super Polymerization" replication, Tenjo Hikari naturally thought of using "different forms of fusion" to reverse fusion and replicate Super Polymerization.
But compared to the concept of "Super Polymerization God" found in the original work, using fusion to recreate "Super Polymerization" is a relatively complex matter.
Tenjo Hikari had no clue at all.
Is it "Deck Fusion"? "Graveyard Fusion"? "Fusion Recovery"? Or "opponent's Monster Fusion"? Or perhaps a "non-responsive fusion"? Or simply something identical?
There are too many possibilities, Tenjo Hikari might have to take time for repeated attempts to narrow down the options.
Furthermore, there's another replication possibility that involves "using Monster Cards capable of self-fusion," such as Ancient Gear Hunting Hound, Predaplant Chlamydosundew, Edge Imp Scythe, Mementotlan Shleepy, and Talented Great Sage Crowley, to recreate Super Polymerization.
Anyway, if Tenjo Hikari succeeds in creating a "second" Super Polymerization, he can hang the "powerful" one safely and put a regular Super Polymerization in the Deck, thus reducing the risk of cards in the Deck being fused away, greatly enhancing his duel stability.
However, beyond his summary and analysis, Tenjo Hikari has continuously advanced his primary research direction.
Namely, "Infernoid Onuncu" and "Apoqliphort Towers."
Due to a lack of sufficiently powerful base cards, and no one kindly gifting him a "Psychic End Punisher," Tenjo Hikari has been unable to complete experiments on these two cards.
The latter is easier to say, Tenjo Hikari figures there's no rush.
After all, he can't create Pendulum Cards for Tierra, even if she's anxious.
Besides—at this moment, Tierra is far less urgent than she was at the beginning.
Or rather, Tierra has never really cared about time.
Infernoids are almost fully manufactured, and cooperating with Tenjo Hikari is joyful and satisfactory; why should she hurry?
Of course, although Tierra isn't urgent, Tenjo Hikari believes it's better to create Onuncu sooner.
On one hand, despite owning "Infernoid Tierra," it was created by the Light of Destruction and is incomplete, lacking power.
On the other hand, Tenjo Hikari can't always use "The Dark - Hex-Sealed Fusion" to replace Onuncu.
It's not that it doesn't work, but such substitute fusion materials are ultimately replacements and can't perform in critical moments.
For instance, Tenjo Hikari's "strongest" activation method—Equipped Future Fusion—requires Onuncu heavily.
The reason is simple; Hex-Sealed Fusion can't substitute as fusion material in the Deck!
Although substitute materials work better in broader use, they can't replace the original in the Deck, thereby impeding the strongest setup—no fusion pile, eleven Infernoids to fuse Tierra, search for Illusory Dream, then instantly jump to three big ones.
Never underestimate the Infernoid Monsters.
Tenjo Hikari has never used their effects in previous duels, but that doesn't mean they're ineffective or useless.
Each has impressive effects!
Especially Onuncu and Lilith, they inherently come with Magic Trap Barrier and Monster Effect Barrier, a card exchange for emptying the opponent's hand plus unknown Set Cards, and it could be a winning strategy in both this and the prior world Tenjo Hikari came from.
Tenjo Hikari held a card, scrutinizing it carefully.
Infernoid Onuncu, LV 10, Fire Attribute, Fiend-Type, Attack Power 3000, Defense Power 3000.
The card depicts a colorful halo-bearing, red-winged dragon Archfiend emitting bursts of lasers, but soon, the rays fade and blue Hellfire slowly dissipates.
Still not enough.
Despite using several of Mr. T's cards to manufacture it, it's still insufficient, though the basic prototype has stabilized. Next, as he's done before, slowly manufacturing will do.
Effortless.
Relatively though...
Tenjo Hikari picked up another card.
Compared to the faint presence of Infernoid Onuncu, this "Apoqliphort Towers" couldn't be birthed at all.
Despite the rare materials of "Pendulum Monsters" prepared for it, even created by "G·O·D," investing so much effort failed to produce results, meaning it truly can't be born.
Probably, until "Pendulum" is thoroughly manifested, materialism really can't emerge.
He stored the card away.
Then, he began examining other things.
ZONE's data, Fubuki's memories, the feelings and mental state of unconscious classmates, the ripple generated when Aiko hit the wall, and fragments collected from Tierra's Void Fire incineration…
These messages either provided by friends or self-gathered over time are being studied by Tenjo Hikari and his Spirited companions. Their sole aim is locking a coordinate.
[Inner World]'s coordinate!
All along, humans have passively endured every strike by darkness without a method to fight back, only countering enemies sent by darkness.
They had no means to resist darkness.
But—
Tenjo Hikari never tolerates silently; although darkness's true form appeared in this world, offering humans a chance against the "Death" they couldn't touch, it doesn't guarantee direct confrontation.
If darkness desires, if he's patient, he can withdraw temporarily, as he has ample resources; invading Spirits aren't his own strength, meaning no loss.
When he strikes again, should they endure passively?
No!
Absolutely not!
How could one just take hits without retaliation!? Tenjo Hikari couldn't endure such treatment!
Thus, Tenjo Hikari's thoughts were determined from the start.
Find, target the enemy, invade their territory, defeat, eradicate!
Just like seeking Fusion Army's base, locate darkness's existence, triumph over him!
Else, if he simply leaves, later people will suffer!
Fortunately, as Tenjo Hikari envisaged, like Teacher Daitokuji using Philosopher's Stone and Macro Cosmos Cards to create the Artificial Dimension, connecting with the Forgotten Dimension, the presence of the Inner World, comprehensible by modern human "science," is indeed an "Other Dimension."
Thus, Tenjo Hikari and Tierra can slowly gather information, locking the coordinate of "DT World Dimension," finding the DT Dimension.
Tenjo Hikari eventually locked onto a Dimension, a Dimension directly connected to this world.
Upon verifying this, Tenjo Hikari understood why darkness could isolate mankind's Dimension Gate System effortlessly.
After all, the Human World contains an "Inner Dimension" directly connected to darkness's realm!
Only requiring a "coverage" easily complete the task.
If using a more precise, fitting name for this Dimension, it should be called…
[Post-apocalyptic World].