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 Flux) 
Extension: Forge Couple
Model:  yiffymix_v62Noobxl

Prompt Infos: 

Steps: 35, Sampler: Euler a, Schedule type: Automatic, CFG scale: 7, Seed: 4254568980, Size: 1024x1024, Model hash: 5246f81705, Model: yiffymix_v62Noobxl, Denoising strength: 0.3, Clip skip: 2, Mask blur: 4, Inpaint area: Only masked, Masked area padding: 32, Lora hashes: "StS-Illustrious-Detail-Slider-v1.0: 2e7a68ec7e2e", Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

Positiv: 

masterpiece, best quality, amazing quality, male, very aesthetic, high resolution, absurdres, <lora:StS-Illustrious-Detail-Slider-v1.0:3>, sonic the hedgehog \(series\), Open field, Silver the Hedgehog, standing, lifting right hand, penis, balls, smirk, white gloves, looking at each other,
masterpiece, best quality, amazing quality, male, very aesthetic, high resolution, absurdres, <lora:StS-Illustrious-Detail-Slider-v1.0:3>, sonic the hedgehog \(series\), Shadow the Hedgehog, floating , in air, white gloves, looking at each other, blush, angry expression, suspended in air, penis, balls, falling backwards,

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, eyelashes, plate, plates, ((((Female)))), ((breasts)), eye lashes, standing on ground, shaking hands, Sonic,

After effects via Flux and Photoshop: 

Psychic effect: 

{
  "sui_image_params": {
    "prompt": "Add a glowing psychic aura around the characters inspired by Silver the Hedgehog, with soft light blue and white energy waves, floating particles, and a subtle telekinetic distortion effect. Keep the character and background unchanged.",
    "model": "FLUX_Kontext_Dev",
    "seed": 1159233887,
    "steps": 40,
    "cfgscale": 1.0,
    "aspectratio": "Custom",
    "width": 1792,
    "height": 1344,
    "sampler": "euler_ancestral",
    "fluxguidancescale": 1.0,
    "initimagecreativity": 1.0,
    "maskblur": 4,
    "automaticvae": true,
    "negativeprompt": "",
    "swarm_version": "0.9.6.3"
  },
  "sui_extra_data": {
    "date": "2025-06-28",
    "initimage_filename": "SilverShadowFloat V2.png",
    "initimage_resolution": "1792x1344",
    "prep_time": "3.80 sec",
    "generation_time": "3.35 min"
  },
  "sui_models": [
    {
      "name": "FLUX_Kontext_Dev.safetensors",
      "param": "model",
      "hash": "0x75bda215f4febf4a7024d23a4c18d09f99c3ce745f8ecec8faa5e68c2c4fa8aa"
    }
  ]
}

Evening effect: 

{
  "sui_image_params": {
    "prompt": "Replace the background with an open field at night, Keep the 2 characters in the same pose, color, and detail. Don\u2019t alter the subjects. The background should be in an Anime Sonic the Hedgehog style. ",
    "model": "FLUX_Kontext_Dev",
    "seed": 1204816068,
    "steps": 40,
    "cfgscale": 1.0,
    "aspectratio": "Custom",
    "width": 1792,
    "height": 1344,
    "sampler": "euler_ancestral",
    "fluxguidancescale": 1.0,
    "initimagecreativity": 1.0,
    "maskblur": 4,
    "automaticvae": true,
    "negativeprompt": "",
    "swarm_version": "0.9.6.3"
  },
  "sui_extra_data": {
    "date": "2025-06-28",
    "initimage_filename": "SilverShadowFloat.png",
    "initimage_resolution": "1800x1344",
    "prep_time": "2.75 sec",
    "generation_time": "3.48 min"
  },
  "sui_models": [
    {
      "name": "FLUX_Kontext_Dev.safetensors",
      "param": "model",
      "hash": "0x75bda215f4febf4a7024d23a4c18d09f99c3ce745f8ecec8faa5e68c2c4fa8aa"
    }
  ]
}