Therese Alexanderite from The Rising of the Shield Hero / Tate no Yuusha no Nariagari
Keep in mind that settings may vary slightly between different versions. See below for more details.
When I tested this with different checkpoints and LoRAs, it seemed to work quite well.
Pony:
A LoRA weight of 0.8 works great, though you can adjust the strength as you prefer.
Prompts I usually used:
aqua hair, single braid, long hair, blue eyes, headband, bare shoulders, white shirt, leather corset, bracelets, blue dress, long dress,
aqua hair, single braid, long hair, blue eyes, aqua kimono, blue forehead jewel,
SD 1.5:
A LoRA weight of 0.7 works great, though you can adjust the strength as you prefer.
Prompts I usually used:
aqua hair, single braid, long hair, blue eyes, headband, bare shoulders, white shirt, corset, bracelets, blue dress, long dress
aqua hair, single braid, long hair, blue eyes, aqua kimono, forehead jewel