Resources used: (bare in mind that I do quite a lot of editing on pictures so you might not get quite the same results)

Photoshop
Stable Diffusion (Forge)
Extension: Forge Couple
Model:  furrytoonmix_xlIllustrious
Loras: <lora:Smooth Anime 2 Style SDXL_LoRA_Pony Diffusion V6 XL:0.7>, <lora:Pony_DetailV2.0:0.7>, 
Steps: 25, Sampler: Euler a, Schedule type: Automatic, CFG scale: 7, Seed: 947029859, Size: 1024x1024, Model hash: b3897ed289, Model: furrytoonmix_xlIllustrious, Denoising strength: 0.25, Clip skip: 2, Mask blur: 4, Lora hashes: "Smooth Anime 2 Style SDXL_LoRA_Pony Diffusion V6 XL: 91bf1becfe97, Pony_DetailV2.0: efd36a2f208d", 

Positiv:
<lora:Smooth Anime 2 Style SDXL_LoRA_Pony Diffusion V6 XL:0.7>, <lora:Pony_DetailV2.0:0.7>, smooth anime style, masterpiece, best quality, amazing quality, very aesthetic, male, side view, bedroom, 2 characters, sonic the hedgehog \(series\), Tails the Fox, tall, wide hips, leather harness, balls, penis, smirk, looking at Knuckles, standing, holding rope,
<lora:Smooth Anime 2 Style SDXL_LoRA_Pony Diffusion V6 XL:0.7>, <lora:Pony_DetailV2.0:0.7>, smooth anime style, masterpiece, best quality, amazing quality, very aesthetic, male, side view, bedroom, 2 characters, sonic the hedgehog \(series\), Knuckles the Echidna, bondage, bound, penis balls, ball-gag,

Negative prompt: 
realism, 3D,busty, ugly face, mutated hands, low res, blurry face, black and white, text, human, watermark, chubby, pubic hair, eyelashes, tears, piercing, lips, shoes , socks,  eyelashes, plate, plates, ((((Female)))), ((breasts)), eye lashes, on car, eyelashes, feminine, shirt, bra, finger nails,