parameters

masterpiece, best quality, amazing quality, high resolution, ultra-detailed, absurdres, newest, (highly detailed fur:1.6), furry, anthro, duo, male_anthro, 2boys, cub, young, anal sex, canine penis, knot, paws, age difference, size difference, biting, motion lines, large insertion, anus, anatomically correct, realistic, pawpads, sideways, fucking, collar and leash, slave, prison clothes, prison cell, laying down
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german_shepherd, adult, canine penis, knot,
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otter, (young:1.3), cub, brown fur, white humanoid penis,
Negative prompt: bad anatomy, bad hands, missing fingers, extra limbs, human hands, legs disappearing, limbs missing, missing tail, blue fur, extra leg, extra fingers, no tail, bad eyes, extra toes, (human:1.6), skin, bad quality, low quality, worst quality, skin, shiny skin, lamp, fat rolls, fat, long torso, low resolution, pov,
Steps: 35, Sampler: DPM++ 2M, Schedule type: Karras, CFG scale: 5, Seed: 558865118, Size: 1024x1024, Model hash: a726dab794, Model: novaFurryXL_illustriousV9b, Discard penultimate sigma: True, Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

Edited a lot by hand in psint.net and in painted a lot in forge. used the lora <lora:Dungeon:1> to change the background, upscaled in img2img