Here's a LoRA of Le Fay Pendragon from High School DxD! It took a lot of tries for me to get her hair right, and this is the result. I haven't included her witch outfit to allow flexibility with giving her outfits and stuff, but I may upload a version with the witch outfit in the future.

There are a couple other LoRAs of her, but they either didn't get her hair right consistently or was very inflexible with putting her in different outfits. I made this LoRA with images generated using said LoRAs. If you're interested, you can check them out here:

https://civitai.com/models/387474

https://civitai.com/models/??5118

For the sampler, I think euler ancestral works the best.

Trigger words: "LFay,LFtubehair"

The LoRA has a tendency to produce images of her with long hair. to remedy this. I think putting "long hair" In the negative prompt remedies this.