A LoRA that makes Illustrious actually hold mutual 69 — both partners engaged at the same time, in the correct head-to-toe orientation. Base Illustrious alone usually collapses this into one-sided oral or flips the pair face-to-face; this LoRA was built specifically to fix that geometry.

**Trigger:** `mutual_69` (plus the standard tags: `69, 1girl, 1boy, hetero, oral, fellatio, cunnilingus`)

**Recommended strength:** 1.0

**Trained on:** official Illustrious XL v0.1 — ports cleanly to merges (verified on MellowMix Airy).

**Measured accuracy (my own test, 8 generations, unseen characters):** 7 clean mutual hits, 1 near miss. No-LoRA control on the same prompts: 0/2. Success still depends on the seed — if the pair flips face-to-face, re-roll.

**How it was made:** 30 geometrically verified mutual-69 images, Danbooru-tag captions, SDXL LoRA dim 32. The released file is the epoch-6 checkpoint (720 steps) — later epochs were also trained and measured, and epoch 6 scored highest (7/8 vs 5/8), so it is the one published here.

**Prompt templates (both verified):**

Side-lying:

`masterpiece, best quality, mutual_69, 69, 1girl, 1boy, hetero, oral, fellatio, cunnilingus, licking, penis, pussy, nude, sweat, blush, <hair> hair, long hair, <eye> eyes, <bed/sofa>, indoors, lying, on side`

Girl on top:

`masterpiece, best quality, mutual_69, 69, 1girl, 1boy, hetero, oral, fellatio, cunnilingus, licking, penis, pussy, nude, sweat, blush, <hair> hair, long hair, <eye> eyes, bed, indoors, girl on top, on top, lying, on back`

Sibling version for Krea 2 is also available on my page.