Someone requested me this. Sorry it took so long due to my limited time.
Since I read the novel from the beginning until the end, and watched the anime, I feel like I can't half-hearted in making this.
Recommended Strength 0.8 to 1.
Base Prompt:
TerminusEst, blue eyes, white hair, very long hair, hair between eyes, hair_ribbon, black_ribbon, petite,
Default Outfit:
SchoolOutfit, school_uniform, white_uniform, long_sleeves, juliet_sleeves, frills, pleated_skirt, neck_ribbon,
Result wise, I think it's very consistent, so I hope you'll like it.