[Time travel + System + Invincible protagonist + Warhammer reference + Father-son daily life + Invincible young hero]

I woke up to find myself the most miserable Primarch in the Warhammer universe, Guilliman!

At the start, the Eldar stabbed him in the neck with a knife, the Chaos Legion attacked him head-on, and his own offspring clung to a broken holy book from ten thousand years ago.

Luckily, I have the "Strongest Regent System" with me, and I merged with Regent Witrum at the start! I stopped the Thunderhawk with my bare hands, traversed warp space with my bare body, and crushed a Chaos Can with a single punch!

Abaddon: "How could he possibly be resurrected?!"

Tzeentch the Demon: "He dragged me out of warp with his bare hands!!"

Ultramariner: "Father...why are you taking out your belt?!"

Guilliman grinned: "Good boy, today Daddy will teach you what 'fatherly love is as solid as a mountain' really means!"

With all the Ultra Warriors upgraded and empowered by intelligent atoms, their offspring are all little superhumans!

The Khorne's army? Crushed! The filthy tide of corruption? Purified!

A treacherous scheme? I'll drag the real me out of the warp with my bare hands and slap him across the face!

Slaanesh is below, the Regent is above!

Guilliman shattered the Eye of Fear, grabbed the heads of the four evil gods, and threw them onto the Golden Throne: "Father, you didn't beat them hard enough or fast enough back then! This generation of Chaos—needs to be whipped with a belt!"

When the Black King awakens from his slumber, he will usher in his twilight.

"I want the boy to go home with his father on a rainy night. I want the two monsters to have the grandest wedding under a tree in Tokyo. I want the father to recognize his three children. I want the great mother not to die at the hands of a dog."

"Everyone deserves happiness! There's no reason, I just want to do it."

"That's right, Black King, it's just what I wanted to do!"

Ye Fan sat high in the sky and said so.

I am their senior brother, so of course I have to suppress all enemies in the world for them!

[Make up for regrets + double crossing + decisive killing]

On the eve of his clan's genocide, Sasuke came to the world of Demon Slayer. From then on, the Demon Slayer world had one more Demon Slayer.

Just as he inherited Yunyi's will and was about to kill Muzan, the Sharingan evolved into a Mangekyō, and the power of time and space pulled him back to his original world...

When Uchiha Itachi returned home and was about to kill his parents, he found his younger brother, who was four years older than him, sitting cross-legged at the dining table.

Uchiha Sasuke raised his head, looked at Itachi, who was in shock, and said softly:

"Sit down, brother, and put the knife away. If you use a knife in front of me... you will die."

"I don't want to kill any of my relatives anymore..."