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
Model:  chromaxlMix_v4Sorbet.safetensors
Loras: <lora:Smooth Anime 2 Style SDXL_LoRA_Pony Diffusion V6 XL:0.7>, <lora:Pony_DetailV2.0:0.7> SD Extension: Latent Couple
Positive: 
sonic the hedgehog \(series\), Tails the Fox, blue eyes, naked, bulge white gloves, on all fours, anus, presenting hindquarters,
smirk, full body view, balls, penis, pawbeans, (tall, twink, femboy,) feet paws, wide hips,

Negative: 
busty, ugly face, mutated hands, low res, blurry face, black and white, text, human, watermark, chubby, pubic hair, bulge, holding object, light, lighting, bad hands, eyelashes, tears, piercing, lips, shoes , socks,

Addition for inpainting: 
disembodied penis, cum, cum on rump, orgasm, moaning, pleasured expression.