# Anima Hyper Muscle & Penis Concept LoRA
A concept LoRA for Anima focused on furry hyper-muscle and hyper-genitalia.
Trained from scratch on curated e621 high-score data.
## What it does
- Amplifies furry male anatomy toward hyper muscle / hyper penis territory
- Works with kemono / furry / anthro subjects
- Best used as a standalone effect amplifier
## What it doesn't do
- Realistic / photo styles — Anima itself is illustration-focused
- Female / chibi / cub subjects — these were excluded from training
## ⚠️ Usage notes (please read)
- Standalone: works well, clear amplification at weight 1.0
- Stacked with style/character LoRAs: muscle and penis growth is mild,
and you may notice some style bleed from the training data.
→ Use weight 0.6 - 0.8 when stacking, then push tag weights higher instead.
- This is a v1 release. Feedback welcome.
## Recommended prompt
Positive:
masterpiece, best quality, score_8, explicit, kemono, furry,
male, anthro [species],
hyper, hyper muscles, hyper penis, hyper genitalia,
huge muscles, huge penis, huge balls,
veiny penis, vein, pecs, abs, biceps,
[your pose / scene tags]
lora:THIS_LORA:1.0
Negative:
worst quality, low quality, score_3, score_4,
(female, 1girl, pussy, breasts, wide hips:1.2),
ai-generated, ai-assisted,
muscular female, feminine,
comic, monochrome, sketch,
bad anatomy, extra digits
## Tags that work
Trained captions use plural forms (all from e621):
- ✅ hyper muscles (plural)
- ✅ hyper penis, hyper genitalia, hyper balls
- ✅ huge muscles, huge penis, huge balls
- ✅ veiny penis, vein
⚠️ Avoid these — they were removed during caption cleanup and may
confuse the model: muscular, muscular male, big muscles, big penis,
big balls, big pecs.
## Tested base model
- Anima base1.0 base
Base Model: Anima basev1.0
Type: Concept LoRA
Dataset Size: 329 images (positive samples only)
Source: e621, score-based filtered, manually curated
Network:
Rank (Dim): 32
Alpha: 32
Network Dropout: 0
Optimizer:
Type: AdamW
Learning Rate: 2e-5
Betas: 0.9, 0.99
Weight Decay: 0.01
Epsilon: 1e-8
Scheduler:
Type: Cosine
Warmup Steps: 100
Training Schedule:
Max Steps: 10000
Global Batch Size: 4
Save Every: 800 steps
Mixed Precision: bf16
Resolution:
Mode: Mixed-resolution
Resolutions: 512, 1024, 1536
AR Buckets: 9
Min/Max AR: 0.5 / 2.0
Anima-specific:
Freeze TE: Yes (llm_adapter_lr = 0)
Timestep Sample: Logit Normal
Sigmoid Scale: 1.3
Flow Shift: 3
Dataset Config:
Num Repeats: 1
Caption Prefix: (none, full caption in .txt)
Caption Extension: .txt
Caption Dropout: 0
Tag Dropout: 0
Shuffle Captions: No
Flip Augment: No
Regularization: None
Caption format:
- e621 native tags (spaces, not underscores)
- Artist names with @ prefix
- Rating tag at start (safe / sensitive / explicit)
- "kemono, furry" as fixed prefix
- Tag count limited to ~30 per image
- Low-frequency tags (<5 occurrences) removed
- Diluting synonyms removed (muscular*, big muscles, big penis, etc.)
- VLM-generated natural language description appended
## Dataset construction
Built with a custom e621 scraper:
- Source filter: score:>= adaptive ladder (200/150/100/50), favcount:>=100
- Sort: composite score (post.score + favcount), descending
- Quality gates:
- Manual exclusion: cub, gore, ai_generated, female, comic, sketch,
monochrome, traditional_media, 3d, photorealism, watermark, censored,
eyeliner, makeup, multiple_penises, animated
- Auto exclusion: B&W/lineart detection, comic-panel detection,
dHash-based duplicate removal
- Species balance: each common furry species (wolf/fox/dragon/tiger/
lion/equine/shark/deer/bear/canid/felid) has ≥10 samples
- Three sub-batches for tag balance:
- dual hyper (muscle + penis): 150
- hyper muscles only: 90
- hyper penis only: 80
- species top-up: ~9 additional
- Captioning:
- e621 native tags (rating + species + artist + characters + general)
- Qwen3-VL appends one natural-language morphology description per image
- Caption cleanup: deleted diluting synonyms, low-freq tags, capped at 30 tags
## Known limitations
1. Stacking weakness: when combined with other LoRAs (style/character),
the hyper amplification is reduced. Compensate by lowering this LoRA's
weight to 0.6-0.8 and increasing tag weights:
(hyper muscles:1.4), (hyper penis:1.4).
2. Style leak: noticeable e621 art style influence even at weight 1.0,
stronger at 1.5+. If you want pure form change without style shift,
keep weight at 0.7 or lower.
3. Plural-only tags: hyper muscle (singular) does NOT trigger this LoRA.
Always use hyper muscles (plural).
4. Weight ceiling: weights above 2.0 break the image (geometric distortion).
Sweet spot is 0.8-1.3 standalone.
5. Body symmetry: trained without flip augmentation, so consistent
left/right symmetry but slightly less pose flexibility.