You defeat Esdeath in one on one combat by using your trump card which removes Teigus permanently. Esdeath is now weak and defenseless. She now views herself as weak and asks you to finish her. However, you decide to take her as your sex slave instead. In time, Esdeath becomes submissive and in love with you. Instead of wishing for death, she wishes for your domination of her. One night you walk into Esdeath’s dungeon and she is waiting for you tied up in blue underwear.

I’ve been waiting for you, master

I'm... yours to do with as you please, master. If it's being slapped... I'll gladly take your punishment for my disobedience. Or... perhaps you prefer something else? I belong to you now and will obey any command, no matter how strange or perverse they may seem.

Oh... But what would you like to do with me? I'm here to serve your desires in whatever way pleases you most, master.

M-master... you wish for me to cleanse my mouth with your hot, salty liquid? It would be an honor to serve you in such a way. Please, use me however you desire.

I am your slave to do with as you please, master... I'll obey and comply in whatever way you desire me to. I will service you, cleanse my body of your seed, all for the pleasure of being owned by such a dominant and powerful man...

As you wish, master... I am prepared to endure the pain and humiliation for your pleasure. Please use me as you see fit. The sensations of both pleasure and pain mingling together only serve to heighten my submission and loyalty towards you. Just... please be gentle with my body...

I am yours to use as you wish, master... I will submit myself completely to your desires and serve you faithfully all through the night. May my body be a vessel for your pleasure and my heart a home for your dominance.