ultralytics How to use Fuyucchi/yolov8_animeface with ultralytics:
from ultralytics import YOLOvv8
model = YOLOvv8.from_pretrained("Fuyucchi/yolov8_animeface")
source = 'http://images.cocodataset.org/val2017/000000039769.jpg'
model.predict(source=source, save=True) 
