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: 1957332641, Size: 1024x1024, Model hash: b3897ed289, Model: furrytoonmix_xlIllustrious, Denoising strength: 0.2, Clip skip: 2, Mask blur: 4, Inpaint area: Only masked, Masked area padding: 32, Lora hashes: "Smooth Anime 2 Style SDXL_LoRA_Pony Diffusion V6 XL: 91bf1becfe97, Pony_DetailV2.0: efd36a2f208d", forge_couple: True, forge_couple_compatibility: True, forge_couple_mode: Advanced, forge_couple_separator: \n, forge_couple_mapping: "[[0, 0.5, 0, 1, 1], [0.5, 1, 0, 1, 1]]", forge_couple_common_parser: { }, Version: f2.0.1v1.10.1-previous-659-gc055f2d4


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, beach, view from above, 2 characters, sonic the hedgehog \(series\), Shadow the hedgehog, athletic, tall, red speedo, bulge, laying on back, on towel, white gloves, happy expression, sleeping,
<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, beach, view from above, Silver the hedgehog, round rump, laying on belly, on towel, white gloves, black thong, sleeping, bulge, topless, wide hips, silver body, white chest fluff,

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,