seaart.ai and tensor.art are alternative sites that do not require premium subscription for adult content. These are made in tensor.art:
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Sorry that I did not give more details then.
In tensor.art, I used the model manlyalpha and adonismix for the first and last images respectively. I do not remember the middle, sorry. The prompt:
Young gay man of 18 years of age naked in a dark dungeon, twink, slim, thin, 18 years of age, very young, very thin, ressembles Peter Pan, beautiful cute hansome face, whip, slaves, collar and chain, prisoners, cum, pain, fear, open eyes, caged, big hard dick, huge cock, ejaculation, orgasm, semen, cuffed, hairy ass, hairy, hairy legs, hairy chest, butt, cum in ass, cum in asshole, cum in face, cum in mouth, cum everywhere, very long penis, rough gay sex, bdsm, erection, boner, legs up, arms up
Once I got an image I liked I used the "after detailer" button on it to improve the face, and later the upscaler.
Here you two more with almost the same prompt:
This is again Adonismix20, but ressembling Will Smith:
For the next one I picked the model RealBoyMix and added the Loras OnlyCocks and Bukkake excessive cum:
Many models are better trained for females and do not do well with male genitals. Some loras like the above can help with this. Models listed as "masculine" should work better, but it is not always the case.
On the other hand, some of those masculine models are biased towards very muscular bodies, that is why I had to insist so much on being young and thin to try to get a twink. With other models, specially related to anime, it may be the opposite: one may have to insist on being muscular.