MTL - History’s Strongest Senior Brother - ~ 1615. The big demon is a treasure

God gave me one more chance and finally came back after four hundred years.

As soon as I realized I returned, I decided that ‘no one should have pride.’

My goal was to destroy the country. So, I grew up with a genius prince who lived in hiding before returning.
He took up the empire for me and I left him for him to achieve his goal.

‘I came to pick you up Charlize Ronan.’ Dylan, who became a perfect tyrant after a few years, found me after searching all over the continent.

‘Why did you flee and run away?’

After rebirth, she, who used to be a top international spy, becomes the eldest daughter of the Fengs, a fat girl who is ugly and foolish in the eyes of the ordinary people.
Mastering Royal 18 Saber Moves and Purgatory 9 Palms, she rose to fame with the martial arts of Demon Cook.
Upon an imperial edict, she was ennobled as the wife of Lord Cen, and then suffered various intrigues and plots…
She proved herself to be a real overmatch and a true genius to the world…

Kein Rosenguard, a reincarnated girl who suddenly became the crown princess's personal knight!

She fulfills her duties at the side of her highness, Princess Rosarie von Goldheart. A rebellious princess who would rather live her life as dressing as a commoner than attending fancy balls in the castle.

Kein decided she would spend her whole life protecting her Royal Highness but will she succeed in her mission and set aside her growing feelings for her?

Art is not mine! Only the story! Please tell me if you know the artist so I can credit them!

After being reincarnated in a world called Neron, and destined to be an Average Joe, a common D-Rank Adventurer.

Tyler quickly learns the cruelty of life, after being used as a pawn in a selfish and ruthless war, he ended up being captured by the very thing he was fighting against, demons, without any hesitation he was bombarded along with the demons.

Caught in the destruction of the demon king, he was unable to save himself and fell to his death.

Fate, however, had other ideas, it wasn't done with him yet. After being reawakened in a new era, in the center of the demon territory, he finds himself caught in a rapidly growing and dangerous situation.

Swept in his newfound strength, and caught in the greed of his formal self. What will he do next?

Will he return to the people who used and betrayed him, will join the enemy against the human race, or will he forge a new path.