SenY/LoRA · hfb not working?

For example, Anything-V3.0 does not support handjob in the first place, so it seems to tend to produce floating penis in the air.
BloodOrangeMix is relatively easy to get what you intend.
Also, a resolution close to square seems to work well with it.

You might also try this recently released extension.
https://github.com/opparco/stable-diffusion-webui-two-shot
It is also a good idea to dress only the women to prevent their bodies from being conjoined.

<lora:hfb:1>
hfb
AND  hfb, 1girl, school uniform, handjob
AND  hfb, 1boy, nude, penis

I use NAI FULL for the training itself.