Year 845
Kaito Ryder sat on the roadside, leisurely eating an apple as the sun bathed the streets in warm, golden light.
His casual demeanor seemed starkly out of place amidst the panic that suddenly erupted around him.
The ground shook, causing him to pause mid-bite. With a nonchalant shrug, he took a final, hearty bite of the apple and tossed it aside. His gaze was fixed on the disarray as people rushed past him, their faces filled with fear and confusion.
Kaito stretched his arms and cracked his knuckles, his expression unwavering. "Ah, finally it fuckin starts," he said in an exhausted manner
"it's really been so fuckin boring till now."
No matter what someone says, in an medieval world, there are few things you can do.
No games, no internet, no anime.. It's been a hell for him for the past 2 years.
As he walked through the chaos, Kaito's attention was drawn to a colossal boulder flying overhead, carried by an unseen force. He observed it with a hint of recognition.
"Oh, that must be the home-wrecker one," he mused, noting the boulder's path.
How could he not recognized that boulder who was carrying the whole plot of AoT.
It is going to crash at an very important place, the home of Erem Yeager, kickstarting the story.
Coming here from another world did have it's perks after all.
With each step he took, he ventured deeper into the mysteries of this new reality.
As the boulder hurtled toward its destination, he remained on the move, he kept thinking about his plan to survive this world.
In the distance, Kaito spotted the grotesque, misshapen face of the Colossal Titan, who had just shot an penalty shot.
"Dang, that's quite an ugly face," he muttered to himself in an offhand manner. He observed the colossal Titan's unsettling presence for a moment before the smoke came out of it's body and it disappeared.
"T-T-Titans!!" Kaito heard a woman scream in horror
A horde of Titans began to emerge through the hole left by the Colossal Titan's assault. As they advanced into the city, with their eerie facial expressions and their grotesque body form, they sent shockwaves of fear through the onlookers.

"They really look horrible in reality," Kaito commented casually as he took a drag from a cigarette he had acquired from somewhere.
He shook his head to get the weird face of titans out of his mind.
His seemingly calm stood in stark contrast to the chaos surrounding him.
"R-Run, run! "
"Baby, my baby... "
"Yamete Kudasai~"
People scremed in horror and fled anywhere they could.
He turned his head away from the spectacle and continued his journey.
His destination was Eren's house, or rather what remained of it, which lay in the path of the Titans' advance. The journey through the war-torn streets of Shiganshina would lead him to a place where pivotal events in this world's history were about to unfold, and where something he needs is coming.

As Kaito moved through the streets of Shiganshina,he remained a silent observer of the chaos and navigated the town with a certain familiarity. He had somehow come to know every nook and cranny of this place, as though the layout was etched into his mind.
'2 fucking year of roaming around uselessly does that to people', he thought.
Luckily that knowledge allowed him to cleverly avoid the Titans that were spreading carnage throughout the town.
While making his way through the labyrinthine streets, Kaito saw a girl desperately running from a pursuing Titan. He briefly glimpsed at her face and clicked his tongue
"Tch, average."
He swiftly hid in an alleyway without a second thought, deciding not to involve himself in the unfolding chaos. The girl, unaware of his presence, and the pursuing Titan passed by him screaming.
Kaito observed from his hiding spot. Had it been a beauty, he might have interfered but unfortunately, she was not.
He watched as the pursuing Titan eventually closed in on the girl, its large hand reaching out.
"HELP! Somebody hel-"
The girl's terrified scream pierced the air as the Titan caught her, and, without giving her a second to complete her words, the Titan threw her in it's open mouth and closed it, the blood spilling on the street.
Kaito looked at the scene with a mixture of disgust and resignation.
"Ugh...there goes my hunger"
The brutality of this world was undeniable, and he had already witnessed its harsh reality. Despite the horrors he encountered, he continued on his path toward his destination.
"There once was a ship that put to sea~"
Kaito was humming his favorite song as he walked.
"The name of the ship was the Billy O' Tea"
Soon Kaito reached the scene he had been heading toward.
Lo and behold, the scene straight from the series was playing in front of him. Well the characters were realistic now, so it was much more immersive but still,
'I didn't want it to be this immersive' he cried in his mind.
There, amidst the rubble and destruction, Eren and Mikasa were desperately trying to free their mother, Carla Yeager, from the collapsed debris.
"We have to get this off her!" Eren's voice echoed in panic, his hands covered in dust and sweat as he struggled to move the heavy stones.
Carla, trapped and gravely injured, gasped for breath in the midst of the chaos. Her voice strained with pain, she pleaded, "Eren, take Mikasa and run!"
But Eren was not intent on listening to his mother's plea. Determination etched across his face, he continued his frantic efforts to free her.
Kaito watched the scene, the urgency and despair palpable in the air. As an observer, he couldn't help but feel the weight of the situation. The Yeager family's desperate struggle in the face of impending danger marked a pivotal moment in the story of "Attack on Titan." Kaito was now at the heart of a momentous event, where the fate of these characters and the world itself hung in the balance.
As the melodramatic scene continued to unfold, Carla Yeager suppressed her pain, her voice trembling as she addressed her son. "My legs were crushed by the rubble," she gasped, her words strained with agony. "Even if I get out, I can't run."
Eren and Mikasa's faces reflected a mixture of desperation and heartbreak, knowing the grim truth of their mother's words. Their escape from the impending danger seemed increasingly unlikely.
Amidst this heartbreaking tableau, Kaito, who had been observing the scene with detached interest, shifted his gaze elsewhere. His eyes fixed upon the approaching 15-foot Titan, known as the Smiling Titan—the catalyst for the catastrophic events that would change the course of history.
"Royal Blood..." Kaito muttered under his breath, his eyes gleaming with a strange light.
Carla's desperate pleas echoed in the air. "At least listen this one last time!" she cried, her voice filled with a mother's love and desperation.
"If you don't go, all three of us will..." Her words trailed off into an agonizing silence when she saw the grotesque face of the Smiling Titan. Fear gripped her, and her mind froze in terror.
Amid this heart-wrenching scene, Kaito remained in the background, his attention drawn to the unfolding drama. He couldn't help but notice the significance of the moment and the identity of the titan before him. "Diana Fritz, one of the last royal blood titans," he mumbled to himself, cracking his knuckles in anticipation.
The first step of his plan depends quite a lot on her after all.
As Kaito watched, the soldier named Hannes arrived, running toward the dire situation.
Seeing him on screen when he runs away in fear might look cowardly, but now it appeared much more understandable.
Anybody will shit their pants seeing that fucking 15m tall horror of a being walking toward them.
And with a creepy smile on that.
As it happened in show, Carla turned her hopeful gaze toward him, her voice trembling. "Hannes! Take the children and run!"
Torn between his duty and fear, Hannes made a bold declaration to defeat the Titan. However, fear overtook him as he approached the Smiling Titan, and he followed Carla's words instead. He hoisted Eren and Mikasa with great strength, who resisted with all their might in their desperate attempt to save their mother. He started to run toward the waterway.
"The winds blew up, her bow dipped down
Oh blow, my bully boys, blow...."
Kaito exhaled a long breath as he couldn't help but feel a sense of impending action as he observed the chaotic scene.
"Time for a cinematic entry," he mumbled.
He is not going to cut any cost on his first appearance.