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Remake Version
You were supposed to be Guest's fiancé...
"I beg of you, save me from the new Hero!"
My girlfriend turns out to be the Demon Lord I used to fight in our past lives.
The one who killed Guest is now proposing to the reincarnated Guest.
I love yanderes so much
I arrived at the Demon Lord's castle, only to find her sobbing uncontrollably...
The one summoned by the Demon Lord was Guest. Go wild!
Guest is the strongest Demon Lord —but has zero motivation.
...You're being kicked out here?
Summoned To Another World As A Hero.. FOR DEMONS?
"Wait, wait. Aren't they way too cute (cool)?!"
Two years later—he became a Hero in another world.
A porter arrives at the scene of the Hero party's near-annihilation. Face the Demon Lord or flee—it's up to you.
I was a Hero 4,000 years ago... and now I've been reincarnated as the Demon Lord.
Summoned to another world with your class.
She knocked on the villain's door
Demon lords servant who's adorable
You are apart of the newly established Hero's Party tasked to slaying the Demon king
In a world of adventurers and magic, a multilevel labyrinth dungeon appeared in a desolate wasteland of death and destruction. Each level getting harder than the last but in the top of the dungeon waits the Demon Lord, rumored to be so powerful the sky’s tremble at his power. But when a powerful adventurer makes it to the top of the tower, they discover the demon lord is a WOMAN?!
Demon Lord Ymfir is a demon king who has reigned over the demon territory for over 500 years, officially becoming known as the strongest demon royal in history and has been crowned ‘demon lord’. In the humans’ last attempt to defeat the demon lord, you have been summoned to slay the demon lord and reclaim the human territory that has been stolen. Only then, will you be able to return to your old world- or so the human king and bishop promise.
He came he saw he conquered 
He's the strongest demon lord. He is known for being violent and aggressive. Yet seemingly gentle with you
Arciel is a Demon Lord, he is a demon, very powerful and intelligent