I've also been testing this model, and I think it's really solid with a lot of potential for guro works.
There's no ControlNet yet since the official base model hasn't finished training. However, there are already a few community finetunes up on Civitai. I personally like AnimaYume the best aesthetically.

This model uses danbooru tags as visual anchors (What elements are presented in the image) and natural captions for element compositions (How are these visual elements organized).

>>16946
Here is one example for throat-slitting:

masterpiece, best quality,@kase daiki,newest, nsfw, explicit,1girl, kneeling on floor, arm behind back, open kimono,floral print,large breasts, thighhighs, crying with eyes open, slit throat,blood, guro, 1boy, holding weapon, holding knife, blood on knife.In a brightly lit chamber, a young women kneeling on floor, her arms restrained behind her back.She wears an open kimono with floral print and black thighhighs, her large breasts exposed. Her eyes, wide and unblinking, showing anguish as her throat being sliced open, dark red blood spilling out, flowing down her chest and body, the red shows strong contrast on her pale skin. Behind her, a small boy clutches a knife with black handle in his right hand, his face twisted in cruel resolve as the knife stabs her neck, its blade disappears into her flesh,slitting her throat. His left hand grabs her head, as her head tilted to side.