Illustrious penis concept LoRA. Trigger: <code>mpen1</code>.
Trained on illustrated stills made with Unholy Desire Mix Sinister v9. This is not a real-person model. The showcase uses two fictional adult characters: Kyouka Uzen (Mato Seihei no Slave, 21) and Sophitia Alexandra (Soulcalibur).
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Quick start

Checkpoint: Unholy Desire Mix Sinister v9 
Trigger: <code>mpen1</code> 
Strength: 1.0–1.4. Load this LoRA last. 
Solo close-up: 1.2 
Couple / POV: 1.4, man's head out of frame 
For a likeness pass on the whole image, use this LoRA alone. Do not stack a detail LoRA on that pass.

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Workflows and LoRAs used
1. Training stills. Checkpoint: Unholy Desire Mix Sinister v9. Img2img, denoise 0.52, DPM++ 2M Karras, CFG 5, clip skip 2. LoRAs: none.
2. Showcase body. Checkpoint: Unholy Desire Mix Sinister v9. Text to image, 30 steps, CFG 5, DPM++ 2M Karras, clip skip 2. Base 832x1216. Hires: RealESRGAN x4plus anime 6B at 1.5x, then 14 steps, CFG 4.5, denoise 0.34 on solo shots and 0.30 on sex shots. LoRAs on the body, in this order: the character LoRA at 0.85 (Kyouka or Sophitia), Modern_anime_render at 0.65, addDetailAesthetic v2 at 0.55. mpen1 is not loaded on this pass. FaceDetailer uses the body model, denoise 0.26, and does not load mpen1.
3. Showcase penis mask. Same checkpoint. After FaceDetailer, a rectangle over the pelvis is inpainted: VAEEncode, SetLatentNoiseMask, 18 steps, CFG 4.5, DPM++ 2M Karras. mpen1 is loaded last, only on this pass. Penetration and creampie: strength 1.10 model / 0.85 clip, denoise 0.34 or 0.40. Face-adjacent shots: 0.85 / 0.70, denoise 0.40. Group shots: 1.05 / 0.80, denoise 0.42, or 0.85 / 0.70 when the penis is near the face. The woman has a vulva and no penis. Men's heads stay out of frame.
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Train recipe
<ul>
<li>Base: Illustrious, unholyDesireMixSinister v9</li>
<li>Steps: 1600, rank 16, alpha 16</li>
<li>Adafactor, UNet 2e-4, text encoder 2e-5, cosine, 80 warmup</li>
<li>169 illustrated stills, 1 repeat, clip skip 2, 1024</li>
<li>Captions: <code>mpen1, penis, testicles</code> or <code>mpen1, penetration, penis, testicles</code></li>
<li>File: mpen1_penis_unholy_v1.safetensors</li>
</ul>
Prompt
Start with <code>mpen1, penis, testicles</code>. On a single partner, exactly one penis, on the man's pelvis. On a group shot, multiple penises, each on a man. The woman has a vulva and no penis. Keep male heads out of frame.
Negative
<code>child, teen, underage, loli, shota, futa, futanari, female penis, deformed genitals</code>

mpen1 — Penis LoRA for Illustrious (v1)

Unholy illustrated train. Trigger <code>mpen1</code>. Load this LoRA last, around 1.0–1.4.

Files with SHA256: 167da4b949e683ebb714ac6835b6a3b02cdeda8eed290d3ab745dfd2d841b56e