The ring rotated beneath them like a silent clock.
From the observation deck of the Axiom-7, the artificial world curved upward into its own sky, continents folding into horizon, horizon folding into stars. It was beautiful in a way that felt engineered rather than natural, every kilometer a calculation, every mountain a decision made by minds long gone.
Tony Stark leaned against the railing, helmet resting under his arm. "You know," he said quietly, "I've built cities in the sky before. This still makes them look like Lego sets."
Alex stood beside him, hands behind his back, gaze fixed outward. He was not studying the ring anymore. He was studying the space beyond it slipspace distortions, ancient traffic lanes, dormant signals echoing across light-years.
"You're thinking about what comes after," Tony observed.
"Yes."
Tony smirked faintly. "You always are."
For a moment neither spoke. The ship's systems hummed softly, Gear processing Forerunner archives in the background, servitors cycling through diagnostic rituals. Outside, the Halo installation continued its endless orbit, unaware it had just been added to a list of cosmic responsibilities.
Then Alex turned.
"I will be bringing you with me," he said simply.
Tony blinked. "I'm sorry, what?"
"When I travel between universes," Alex continued, tone calm, factual. "You will accompany me."
Tony straightened slightly. "You say that like you're inviting me to a conference."
"In a sense, I am."
Tony studied him for a second, then let out a quiet breath. "You're serious."
"Yes."
"Why me?"
Alex's answer came without delay. "Because you adapt. Because you question. Because you improve what you touch instead of merely using it. Most minds either worship advanced technology or fear it. You do neither."
Tony rolled the helmet between his hands, considering. "And you think that qualifies me for multiversal tourism."
"It qualifies you for perspective."
The word hung there.
Tony looked back out at the ring, then farther to the unfamiliar stars beyond. "You realize once we start hopping universes, there's no 'normal' again."
"There was never a normal," Alex replied. "There was only limited scope."
Tony laughed under his breath. "You really don't do small talk, do you?"
"I do necessary talk."
Silence returned, but it was lighter now.
"So what's the pitch?" Tony finally asked. "Because 'come see alien megastructures' isn't enough anymore."
Alex gestured outward, not just to the ring but to the void beyond it. "Knowledge. Preparation. The multiverse is no longer sealed. Threats will not remain confined to their own realities. If we do not understand them, we will eventually face them unprepared."
Tony nodded slowly. "And you don't want to be the only one holding the manual."
"Correct."
"And you trust me not to blow up a universe."
Alex's gaze shifted just slightly. "You blow things up when necessary. You build more often than you destroy."
Tony smiled at that. "High praise coming from a machine god."
"I am not a god," Alex said evenly. "I am an architect."
Tony slipped the helmet back under his arm and leaned forward on the railing. "You know what the funny part is?"
"What."
"I would've said yes before you even asked."
Alex inclined his head slightly. "I know."
Tony chuckled. "Of course you do."
They stood there for another moment, watching artificial clouds drift across the ring's inner sky. It felt less like standing on an alien structure and more like standing at the edge of a map that suddenly extended forever.
"So," Tony said, "after we finish here, where next?"
Alex's eyes reflected starlight. "Wherever knowledge exists. Wherever preparation is required."
Tony let out a slow whistle. "Multiversal road trip with the most overqualified tour guide in existence."
"Preparation," Alex repeated.
Tony smirked. "Yeah. That too."
Behind them, Gear's voice filtered softly through the deck. "Primary operator, data integration at forty-two percent. Forerunner archives expanding strategic models."
Tony glanced back. "She's getting smarter."
"She is becoming complete," Alex corrected.
Tony turned forward again, expression thoughtful now. "Alright. I'm in. Other universes, ancient tech, existential threats. Just one condition."
Alex looked at him.
"We take breaks," Tony said. "Even cosmic architects need coffee."
Alex considered it for exactly one second. "Accepted."
Tony grinned. "Good. Because I'm not fighting reality fractures without caffeine."
The Halo ring continued its silent orbit, unaware that its discovery had just become a prelude not an endpoint, but a doorway.
And somewhere beyond the visible stars, countless other universes waited.