txt2img: 
duo, 2boys, furry, anal sex, anal penetration, male, bed, size difference, age difference, rape, BREAK,
anthro, husky, young, teen, teenager, canine penis, knot, long fur, blue eyes, canine tail, furry sheath, balls, precum, BREAK,
anthro, adult, older, horse, (male), brown fur, horse penis, brown eyes, furry sheath, balls, cum, Break,
masterpiece, best quality, amazing quality, very aesthetic, high resolution, absurdres, newest, scenery, ultra-detailed, ultra-HD, high resolution, highly detailed, photorealism, photorealistic, detailed eyes, detailed fur, dynamic lighting, 8k, HDR, <lora:StS-Illustrious-Detail-Slider-v1.0:3>
Negative prompt: human, (worst quality, bad quality:1.2), lowres, low quality, bad quality, bad male anatomy, bad female anatomy, grainy, noisy, render, filmgrain, text, deformed, disfigured, human penis, (female), (breasts), abs, extra fingers, bad anatomy, extra fingers, white background, black background, signature, patreon, web address, humanoid penis, text, feral, blurry, faded, antique, muted colors, greyscale, boring colors, flat, bad photo, terrible 3D render, black and white, glitch, cross-eyed, lazy eye, ugly, distorted, glitched, lifeless, bad proportions, watermark, window, human penis, vagina, letters,
Steps: 40, Sampler: Euler a, Schedule type: Karras, CFG scale: 4.1, Seed: 1933369265, Size: 744x960, Model hash: 5901b6dd1e, Model: novaFurryXL_illustriousV50, Lora hashes: "StS-Illustrious-Detail-Slider-v1.0: 2e7a68ec7e2e", freeu_enabled: True, freeu_b1: 1.01, freeu_b2: 1.02, freeu_s1: 0.99, freeu_s2: 0.95, freeu_start: 0, freeu_end: 1, Version: f2.0.1v1.10.1-previous-659-gc055f2d4



img2img: 
parameters

duo, 2boys, furry, anal sex, anal penetration, male, bed, size difference, age difference, BREAK,
anthro, husky, young, teen, teenager, canine penis, knot, long fur, blue eyes, canine tail, furry sheath, balls, precum, BREAK,
anthro, adult, older, horse, (male), brown fur, horse penis, brown eyes, furry sheath, balls, cum, Break,
masterpiece, best quality, amazing quality, very aesthetic, high resolution, absurdres, newest, scenery, ultra-detailed, ultra-HD, high resolution, highly detailed, photorealism, photorealistic, detailed eyes, detailed fur, dynamic lighting, 8k, HDR, <lora:StS-Illustrious-Detail-Slider-v1.0:3>
Negative prompt: human, (worst quality, bad quality:1.2), lowres, low quality, bad quality, bad male anatomy, bad female anatomy, grainy, noisy, render, filmgrain, text, deformed, disfigured, human penis, (female), (breasts), abs, extra fingers, bad anatomy, extra fingers, white background, black background, signature, patreon, web address, humanoid penis, text, feral, blurry, faded, antique, muted colors, greyscale, boring colors, flat, bad photo, terrible 3D render, black and white, glitch, cross-eyed, lazy eye, ugly, distorted, glitched, lifeless, bad proportions, watermark, window, human penis, vagina, letters,
Steps: 40, Sampler: DPM++ 3M SDE, Schedule type: Karras, CFG scale: 5, Seed: 1631898642, Size: 1592x2064, Model hash: 5901b6dd1e, Model: novaFurryXL_illustriousV50, Denoising strength: 0.55, Lora hashes: "StS-Illustrious-Detail-Slider-v1.0: 2e7a68ec7e2e", Version: f2.0.1v1.10.1-previous-659-gc055f2d4

Then after some editing in photoshot/Paint.NET, I did some inpainting using the same parameters and these settings: 

Steps: 40, Sampler: DPM++ 3M SDE, Schedule type: Karras, CFG scale: 5, Seed: 3447249960, Size: 2072x1680, Model hash: 5901b6dd1e, Model: novaFurryXL_illustriousV50, Denoising strength: 0.4, Mask blur: 4, Lora hashes: "StS-Illustrious-Detail-Slider-v1.0: 2e7a68ec7e2e", Version: f2.0.1v1.10.1-previous-659-gc055f2d4

When I inpainted over the husky's face, I added this to the prompt: (((pain, hurt, screaming,)))


Then I ran the whole image through an upscale process. 

Postprocess upscale by: 1.25, Postprocess upscaler: R-ESRGAN 4x+ Anime6B