Tried another anime training using Illustrious. There's little to no data on this character on Danbooru, so the model does not know who he is.

You need a fairly long prompt for good resemblance:

dougi, potara earrings, blue shirt, blue pants, red jacket, long sleeves, yellow lapels, kibitoshin, 1boy, long hair, pointy ears, purple skin, white hair, black eyes,

Sometimes the lora includes arm guards or vambraces when there's none, so it is a good idea to use these on your negative prompt:

handcuffs, vambraces, 

As of now, this model is kinda of a hit-and-miss and i don't know why, although it does provide much better results than prompting alone. Further training needed.