I become Villainess' Butler

Kyle was the brightest brain of his brain. He alone started a new era in technology in his world but seeing the corruption and everything else, he become distraught with his world and started the Interstellar Era, and along with him were the loyal team he cultivated, his parents, and his lover.
After 300 years, he died in an experiment he was doing with his body and got reincarnated in a different world, the world of an Otome Game, Starlight Adventure.
That Otome game was something he liked playing with his lover but the only dislike he had in the game was the Fate that the Villainess got.
He disliked her End, but after his death, he become the Villainess' Butler and decided to protect and let her grow for twenty years as he also want to go back to his past world after 20 years.
But things changed.
-------------------------
"Where are you going?" The Villainess asked.
Kyle sighed mentally, 'Where did the things go wrong? Why did she become like that...'
"Young Lady, my time here is over and I have to go," Kyle answered.
The temperature all around the room went down at a high speed but Kyle felt that sweated.
"What about me?" The Villainess asked with her eyes showing obsession.
---------------------------
This is the rewritten version. Many things were left previously to mentioned previously.
---------------------------
I don't own the cover, the credits belong to the Creator, If he/she wants it removed, then just comment.