Succubus. Futa Monster Girls, #6

Summer is a witch that loves to experiment with magic, and she's good at it. There is a bit of a drawback: she's incredibly clumsy. She's getting better, but that doesn't stop her from making a mess with a particular magic experiment and accidentally getting a succubus out of it. Lilith is a demon princess, and she's not about to allow the witch that just summoned her to bind her. Quite the opposite; if she gets a chance, she'll make the blonde regret daring to call her.
She doesn't quite know what to think when she discovers it all happened by accident, but now that she's out of hell, she's not willing to go back just yet. At odds with each other, neither witch nor demon princess could have expected to develop something like respect for one another or to find themselves amid a romance unlike they had ever dreamed of.