Koinatsu from Demon Slayer / Kimetsu No Yaiba
When I tested it some different checkpoint and LORA's it seemed to work well with this LORA.
LORA weight 0.8 works great, but feel free to adjust the strength to your liking.
Prompts that I usually used:
black hair, hair up, brown eyes, gold hair ornament, japanese clothes, pink kimono, blue kimono, forehead