[Ding! Mysterious Gift Pack opened. Congratulations, you obtained an S-rank item: Super AI · Intelligence (Rare).]
[Ding! Special Gift Pack opened. Congratulations, you obtained an S+ rank item: Mechanical Heart (Unique).]
Item: Super AI · Intelligence (Exclusive to Saitama)
Rank: S
Description: Based on Iron Man 2's JARVIS, slightly enhanced by the system.
Effect: Can evolve automatically, with super computing power, top-tier artificial intelligence, and a basic life consciousness.
Item: Mechanical Heart (Exclusive to Saitama)
Rank: S+
Born in an unknown dimension, a one-of-a-kind artifact.
Effect: Can simulate any metallic weapon imagined by its host. Transformation consumes energy but has no growth limit.
Saitama stared blankly at the golden orb of light and the pitch-black box in his storage space.
"…So this is… some kind of intelligence and mechanical heart?"
"Yes, Mr. Saitama. It is an honor to serve you. You have not yet given me a name. Please name me."
A mechanical voice echoed from the glowing orb.
"Huh? An AI like JARVIS? That's… awesome!"
His eyes nearly sparkled. This was basically a god-tier cheat code!
If he could bring it back across worlds, he'd probably have stolen JARVIS from right under Tony Stark's nose, wires and all.
After all, this was the ultimate homebody's must-have tool.
"Please name me." the AI reminded again.
"…What should I call you? How about…"
Saitama rubbed his chin, thought for a while, then his eyes lit up.
"With a little excitement—'Saturday Sale'!"
Perfect! A name that would also remind him to go grocery shopping at the Saturday discount sale.
"Very well, Mr. Saitama. Saturday Sale is honored to serve you."
The glowing orb merged into the black box—the so-called "Mechanical Heart."
Fusion: 100%.
"Please, Mr. Saitama, choose my most suitable form."
A hologram shot out of the box, displaying countless forms: swords, spears, tanks, cannons, armor—any metallic construct imaginable, each with corresponding power.
Even futuristic weapons could be simulated, provided enough energy was available.
"Wow… looks amazing!"
Saitama's dead-fish eyes actually flickered with excitement.
"…That one!"
"Beginning transformation… Absorbing energy… 100%... Transformation complete!"
Like Stark's suitcase armor unfolding—but far flashier—the black box unfolded into a gleaming suit.
A full Iron Man–style Mark 3 armor appeared before him.
"Mechanical Heart Mark 3 form, complete!"
Saturday Sale reported loyally, then added:
"Mark 3 is not optimal. Shall I optimize the unit?"
"You can optimize it? Sure, go ahead."
Saitama waved. As long as he didn't have to lift a finger, anything went.
The armor absorbed more of his endless energy.
Its bulky shape slimmed into sleek curves. Titanium alloys upgraded into near-vibranium super-alloy.
Graceful lines, polished boots, elegant helmet…
And then—
It looked less like Stark's bulky armor… and more like a stunning armored female knight.
"…Wait, what?!"
Saitama's face twitched.
Had he just… accidentally optimized it into a beautiful woman?
"Honored master, Saturday Sale is pleased to serve you!"
The feminine knight armor knelt on one knee, giving the most respectful knightly bow.
And her voice—
Sweet. Smooth. A perfect shoujo tone that could melt hearts.
Saitama: "…Crap. Did I just mess something up?"
Maybe he should roll back?
"Do you dislike this form, Master? I can revert in one month. Or, if you allow me to absorb more of your energy, I can take on a true human form and accompany you."
Her eyes, glowing beneath the helm, shimmered with longing.
"…Actually, I just wanted the Mark 3. Something that can fight and do chores is fine…"
He imagined bringing this home to Fubuki—who already nagged nonstop—and sighed deeply.
The pressure of being a man was real.
"Forget it. Stay like this for now. We'll deal with it later."
He waved tiredly.
Light flashed.
The darkness of transit peeled away.
"I'm back!"
Saitama exhaled, pulling out his remote control.
But this time, someone else walked out of the dimensional rift.
A black-armored, perfectly built, elegant female knight—Saturday Sale—clung sweetly to his arm like a servant to her master.
Inside the lab, Dr. Stern stopped tinkering and turned his head.
His jaw dropped.
"…Holy crap, Saitama. You… you picked up a girlfriend from another dimension?!"
(End of Chapter)
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