Esil Radiru from Solo leveling / Ore dake Level Up na Ken
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:
esil_radiru_sl, long hair, purple hair, bangs, red eyes, facial markings, pointy ears, earrings, gold armor, red armor, multicolored armor, black gloves, high collar,