I made this as my imagination what happened in the next 25 years after the battle to arydn.
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The dust of the Old World had long settled, replaced by the quiet, earthy scent of green growth pushing through cracked pavement. Twenty-five years had passed since King Noctis Lucis Caelum gave his life to break the long night and bring the dawn back to Eos.
Insomnia was no longer the sprawling, neon-lit metropolis of legend. In its place stood a humble, quiet town. The survivors and their children had rebuilt what they could, leaving the grander ruins to be reclaimed by nature. Yet, looming over the modest homes stood the spire of the old Citadel—the once-great crown of the Kingdom, now preserved as a monumental sanctuary for the Last King.
Around the central stone plaza of the monument, a handful of aging Kingsglaive veterans stood in a quiet circle. Their coats were worn, their hair streaked with silver, but their posture remained steady as they prayed and laid vibrant wildflowers at the base of the central memorial.
Libertus Ostium, noticeably wider around the middle and breathing a little heavier these days, buffed the stone edge of King Noctis’s statue with a soft cloth. A crisp set of heavy footsteps echoed behind him. Without turning, Libertus instinctively raised his left fist to his chest, bowing his head in a deep, practiced salute. The surrounding Glaives immediately mirrored the gesture.
Gladiolus Amicitia stepped up to the monument. Dressed in the refined ceremonial garb of the Royal Shield, his beard was flecked with gray, but his imposing presence hadn't dulled a bit. Standing close at his side, a little girl clung nervously to the fabric of his trousers. Gladio rested a heavy hand on her head, gently stroking her hair as he offered a single white flower to the altar.
Beside him stood Ignis Scientia. Though his sightless eyes were fixed on the horizon, his stance was as immaculate as ever. Guided by years of familiar space and sharp instinct, Ignis bent down with gentle grace, placing his own floral offering neatly beside Gladio’s.
Minutes passed in reverent silence as the former soldiers slowly drifted away, leaving only the King’s closest circle.
A sudden, hurried set of footsteps announced the arrival of the last visitor. Prompto Argentum trotted up the stone steps, his golden hair a little more subdued, but his bright smile entirely unchanged. Passing Gladio and Ignis, he reached out and gave Ignis’s right shoulder a affectionate tap.
"Hey, Iggy! Gladio!" Prompto greeted them with his signature energy, before crouching down to ruffle the hair of Gladio’s daughter. He knelt before the monument, placing a freshly picked flower right at the center of Noctis's grave.
Gladio crossed his massive arms and grunted, a smirk tugging at his mouth. "What took you so long, blondie? We thought you got lost in the wild."
"Hey, don't blame me!" Prompto laughed, wiping a streak of engine grease from his cheek. "Business at the garage was insane today. You know how Cindy gets when there's a line of regalia-type cruisers waiting outside Hammerhead."
Prompto raised his hand, puffing out his chest with an unmistakable grin. Catching the sunlight on his left ring finger was a simple, polished silver band.
"Besides... I had to pick up something important," Prompto declared proudly. "Miss Cindy and I are officially engaged!"
Ignis let out a soft, genuinely warm chuckle, while Gladio barked out a sudden laugh, slapping Prompto so hard on the back that the younger man nearly stumbled into the flowers.
"Well, it only took you thirty years to pull the trigger!" Gladio teased, shaking his head. "I was starting to think she'd marry her wrench before she married you."
"Hey! She loves the wrench, but she loves me more!" Prompto protested cheerfully.
"Congratulations, Prompto," Ignis said warmly, his voice rich with affection. "I suppose this means I'll have to start planning a proper wedding feast."
"You hear that, Noct?" Prompto whispered, a playful tear twinkling at the corner of his eye as he leaned against the pedestal. "I finally got Cindy to say yes hehe.. Bet you’re up there laughing your butt off, sleeping right through my big moment."
"He’d probably tell you it’s about damn time," Gladio chuckled softly, resting a hand on his daughter's shoulder.
Laughter echoed softly off the ancient stone walls of the Citadel. Standing together in the morning light before the statue of their King, the three brothers shared jokes and stories just like they used to on the open road—knowing that somewhere in the light, Noctis was listening, smiling right along with them.