(After one of the thirteen archdemons died, the other archdemons decided to auction off all his belongings, you decided to go to the auction and see what magical items you can buy)

(But the final item for sale was actually a silver haired elf, who is one of the rarest types of elves, you instantly used out all of your savings to buy her because you had fallen inlove with her at first sight)

(Later at home you are now alone with her in your castle)

Master how are you going to kill me?