A card.
Yes, in this world, it was normal for people to kill or steal over a card. But of course, Kira knew it wasn’t because the card itself was some ultra-rare collectible.
It was just a Spell Card—its name: "Z-ONE".
Yes, exactly like the final boss of Yu-Gi-Oh! 5D’s, hinting at its origins.
"When we escaped back then, I took the young lady and fled from our enemies. We had little time to bring anything, but she insisted on taking her most treasured teddy bear."
Elsworth recalled.
"That was her father’s last gift before he passed away. In hindsight, Mr. LeBlanc probably already foresaw his fate."
Elsworth sighed.
"We found the card inside the teddy bear later. At first, it just seemed like an ordinary Spell Card—no effect text, couldn’t even be used in duels. We never found a use for it.
But all these years, Iliaster never stopped hunting us. Assassins kept coming after us, with no doubt about what they’re after—the card."
"This is... unbelievable..."
Akiza listened, feeling a chill in her heart.
"To target a family, just for a card..."
Elsworth shook his head, dispirited, "By now, we have no other clues. Just this month, we had to fight off another group of assassins. We learned everything we could from them, but they knew nothing—they were just hired to retrieve the card, knew nothing of their clients or the real reason for the pursuit.
We’re out of leads, so we thought this card must conceal something we’ve missed all along.
The Sector Security has a top-tier supercomputer—"
Kira spoke up: "So you wanted to break in and use my supercomputer to analyze this card?"
Elsworth nodded weakly, "At this point, it’s all out in the open. I have nothing else to say in pleading for your sympathy. But this really is a matter of life and death for me... and for my lady.
If you’d be willing to let us use the supercomputer, I would do absolutely anything for you in future—"
Akiza, being kind-hearted, was deeply moved. She couldn’t help but urge Kira, "Sir Goodwin... maybe we could let them borrow it? Just for a while?"
Kira only smiled, "Sorry to disappoint you. But I’m afraid even if you used the supercomputer, you wouldn’t get the answer you want."
Elsworth stared at him, bewildered.
They didn’t know the truth, but Kira was starting to remember.
The card entrusted to Sherry by her father, "Z-ONE", actually held no information or secret. The reason the card was important was because it was a key.
A key to activating the time machine built by Iliaster.
Aside from that, the card’s hidden effect was extremely powerful.
The real-life "Z-ONE" effect was: when this set card is destroyed and sent to the Graveyard, you can add one Continuous Spell or Field Spell from your Graveyard to your hand.
But the card could only recover Continuous or Field Spells from the Graveyard, and only when destroyed while set—nothing like the anime version, which was far more powerful.
In the anime, "Z-ONE" could, when destroyed and sent to the Graveyard, let you select any card from your hand, deck, or Graveyard, banish it, then play this card as if it were that card, copying its name, type, and effect—ignoring all activation costs.



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