This one seems to work sometimes and, somehow, it works better if you include

, KarakishiYouhei-danPonybyRR, by Karakishi Youhei-dan,

No idea why, I did the same training as the other styles so I wonder what's the difference. I used x/y/z plot with different number and strength and seems to get better results at 0.9 with latest epoch. Try to change the styles and add negative tags to see if you can get closer to original artist style. Sketch and manga are getting there but not yet. First I did a Lora but it works much worse so I won't bother to include it. Clip skip 1 may be the answer.