Anceril Sacred (アンセリス・セイクリッド) - Shirokami Kyoudan/Pixiv Fantasia 5

Keywords:

Main Outfit - anceriseshirokami, ancermainoutfit, white hair, long hair, ahoge, hair flaps, sidelocks, hair ornament, green eyes, black choker, red jacket, black shirt, medium breasts, belt, yellow skirt, thighhighs, black gloves, brown boots, full body, holding giant sword

While you can prompt for a giant sword just fine, the sword itself doesn't look like the one she uses.