【解説】「ふたなり×女」画像生成
Added 2025-08-21 11:00:00 +0000 UTC# 1.はじめに
この記事では、「ふたなり×女」画像生成の方法を解説していきます。
この生成での難関ポイントは、ふたなり（攻め）と女（受け）で、役割を固定する事です。
どちらか片方は固定して男性器 (penis)が付与され、もう片方には固定して女性器 (pussy) が付与される状態にしたいです。
私が紹介してきた受け攻め役割固定方法は、基本的には男性的・女性的な特徴を利用するものでした。
■【解説】対比構造のプロンプトによる受け攻めキャラ属性固定
https://rarabeat.fanbox.cc/posts/8231225
【解説】対比構造のプロンプトによる受け攻めキャラ属性固定
1.はじめに この記事では、対比構造のプロンプトによる受け攻めキャラ属性固定を解説していきます。 竿役（攻め）とヒロイン（受け）の2名が登場する画像の生成において、単一のプロンプトにより両者の容姿を固定します。 そのために、プロンプトには次の要素を含みます。 ①体格が大きい方が攻めであること。 ②攻めは竿...
しかし、このシチュエーションでは、両者共に女性的である為、上記の方法を取るのは難しそうです。
むしろ、ふたなり同士 (futa with futa) の方が楽まであります。
※ふた (futa) はふたなり (futanari)の略です。
この記事では、その役割固定の点を重点的に解説していきます。
# 2.前提条件
■PornMaster-Anime 色情大师 - Illustrious / noob - IL-V3 [by iamddtla]
https://civitai.com/models/1033851?modelVersionId=1816623
# 3.生成例
①
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
from below, from side,
standing, panty pull, penis grab, looking at penis, looking down,
large penis, testicles, pussy, bottomless,
blush, embarrassed, humid, spoken blush,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
②
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
side-by-side,
mutual masturbation, futanari masturbation, fingering, sitting, spread legs,
large penis, testicles, pussy, completely nude, head wings, low wings, pink hair, pink eyes,
precum, pussy juice,
blush, embarrassed, ecstasy,
motion lines,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
③
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
from below, from side,
oral, irrumatio, standing, drooling, kneeling, head grab, female masturbation, implied fingering,
large penis, testicles, completely nude, head wings, low wings,
blush, ecstasy, closed eyes, humid,
trembling, sound effects,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
④
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
69, oral, fellatio, cunnilingus, drooling, lying, on back, on stomach,
large penis, testicles, pussy, completely nude, closed eyes, head wings, low wings,
saliva trail,
blush, ecstasy,
trembling, motion lines, sound effects,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑤
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
upright straddle, sitting on lap, imminent vaginal, sheet grab, eye contact,
large penis, testicles, pussy, completely nude, head wings, low wings,
precum, pussy juice,
blush, embarrassed, heavy breathing,
motion lines, twitching penis,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑥
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri,
cut-in, cross-section, uterus,
vaginal, sitting on lap, upright straddle, leaning back,
large penis, testicles, pussy, completely nude, head wings, low wings,
pussy juice, stomach bulge, navel,
blush, clenched teeth, tears, sweat, humid,
motion lines, speed lines, ^^^, sound effects,
height difference, onee-<年齢タグL>
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑦
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
from side, x-ray, internal cumshot, uterus,
vaginal, reverse upright straddle, sitting on lap, french kiss, leaning back,
ejaculation, cum in pussy, cum on penis, cum overflow,
large penis, pussy, completely nude, head wings, low wings,
blush, ecstasy, female orgasm, humid, stomach bulge,
trembling, motion lines, sound effects, thought bubble,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑧
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
from below,
after vaginal, after kiss, saliva trail, girl on top, lying on back, on stomach, hug,
cum in pussy, cum on penis, cumdrip,
large penis, testicles, pussy, completely nude, head wings, low wings,
blush, ecstasy, female orgasm, heart, heavy breathing, trembling, motion lines, sound effects, japanese text,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑨
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
after vaginal, imminent vaginal, upright straddle, sitting on lap,
large penis, testicles, pussy, completely nude, head wings, low wings, erection, back,
cum in pussy, cum on penis,
blush, embarrassed, naughty face, open mouth, sweat, heavy breathing,
motion lines, twitching penis,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑩
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
cut-in, face, ovum, close-up,
vaginal, mating press, tongue out, drooling,
large penis, testicles, perineum, pussy, completely nude, head wings, low wings,
cum in pussy, cum overflow,
blush, ecstasy, female orgasm, ahegao,
trembling, motion lines, motion blur, sound effects,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑪
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
cut-in, face, ovum, close-up,
vaginal, mating press, deep penetration, tongue out, drooling,
large penis, testicles, perineum, pussy, completely nude,
cum in pussy, cum overflow,
blush, ecstasy, female orgasm, ahegao,
trembling, motion lines, motion blur, sound effects,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑫
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
cut-in, face, ovum, close-up,
vaginal, mating press, deep penetration, tongue out, drooling,
large penis, testicles, perineum, pussy, completely nude,
cum in pussy, cum overflow,
blush, ecstasy, female orgasm, fucked silly, ahegao,
trembling, motion lines, motion blur, sound effects,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑬
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
from below,
after vaginal, after kiss, saliva trail, lying on back, on stomach, hug,
cum in pussy, cum on penis, cumdrip,
large penis, testicles, perineum, pussy, completely nude, head wings,
blush, ecstasy, female orgasm, heart, heavy breathing, trembling, motion lines, sound effects,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
⑭
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
cut-in, 2koma,
after vaginal, french kiss, lying on back, on stomach, hug,
cum in pussy, cum on penis, cumdrip,
large penis, pussy, completely nude, head wings, low wings,
blush, ecstasy, female orgasm, heart, heavy breathing, trembling, motion lines, sound effects,
onee-<年齢タグL>, height difference,
dark background, on bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
# 4.解説
下記のようなプロンプト構成にしています。
①「ふたなり×女」のシチュエーションである事を示します。
```
2girls
←2人の女性
yuri, couple
←百合カップル ※これを指定する事で、登場人物を女性2名に固定しやすくなる印象です。
futa with female
←ふたなり×女
penis, pussy
←男性器、女性器
```
②加えて、そのペアによるアクションは、男性器と女性器の両方が描写されるような組み合わせで指定するのがオススメです。例えば、この記事では、次のように指定しています。
```
mutual masturbation, futanari masturbation, fingering
←相互オナニー、ふたなりの自慰、手マン
oral, female masturbation, implied fingering,
←口淫、女性の自慰、手マンの示唆
vaginal
←女性器への挿入
```
③その上で、身長差のある有名女性キャラのペア（一緒に描かれる事が多いカップリングに限る）を指定しています。
```
onee-<年齢タグL>
←オネ□'/
height difference
←身長差
hanako \(blue archive\), koharu \(blue archive\)
←ハナコ、コハル（ブルーアーカイブ）
```
このアプローチでは、③の点をよく考える必要があります。基本的に言える事として、高身長の方がふたなりになりやすいようです。
ただし、両者が女性的な容姿であり、かつキャラ指定無しの場合は、どちらが高身長になるかはランダムに見えます。
それに対して、元々身長差がある形で描写されるキャラ同士を指定した場合は、その身長差のパターンも学習している可能性を感じます。
# 5.おわりに
私は画像生成AIで叡知な画像を生成する事を、性癖対談と呼ぶ事があります。
これは、AIの画像生成とその結果を受けた私のプロンプト修正の繰り返しが、まるで対談のようだからです。
そして、性癖は変わるものです。それは何かのキッカケがあって変わる事もあれば、何のキッカケもなく変わる事もあります。
その為、この記事はその変わりゆく性癖の現在状況を確認する為に書いてみました。
結果としては、成功とは言えない感触があります。
個人的な感想としては、このシチュエーションであればオネ=/₃夕 (onee-<年齢タグS>) かつ誘い受け (power bottom) に近い方が好みかもしれません。つまり、生えている方を逆転させたうえで、受け側を優位にする形です。 小柄優位 (small_dom_big_sub) のLoRAモデル適用で実現できるようです。
■Small Dom Big Sub [Illustrious] - V1 [by DesGens]
https://civitai.com/models/1710280/small-dom-big-sub-illustrious
※構図系LoRAモデルの適用の場合、強めに適用してtxt2imgした後に、その生成画像をLoRAモデル抜きでimg2imgするアプローチもあります。これにより、LoRAモデルの副作用である画風の変化を抑える事ができます。
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple, power bottom, assertive female,
vaginal, girl on top, cowgirl position, lying, arm support,
small penis, (testicles :0.35), pussy, bottomless,
happy sex, heavy breathing, full-face blush, spoken musical note,
motion lines, motion blur,
onee-<年齢タグS>, height difference,
dark background, on bed,
small dom big sub
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple, power bottom, assertive female,
from side,
vaginal, doggystyle, mounting, head on hand, looking back, closed eyes,
small penis, testicles, pussy, bottomless,
happy sex, heavy breathing, spoken blush,
motion lines, motion blur,
onee-<年齢タグS>, height difference,
dark background, on bed,
small dom big sub
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple, power bottom, assertive female,
vaginal, missionary, spread legs, hug,
small penis, testicles, pussy, bottomless,
happy sex, heavy breathing, spoken heart,
motion lines, motion blur,
onee-<年齢タグS>, height difference, low wings,
dark background, on bed,
small dom big sub
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
このように成功と言えないケースでも、そこから見いだせるものもあります。
ぜひ、あなたも性癖対談を試してみて頂ければと思います。
多くの人にとっての、ではなく、今のあなたに合った性癖対談が行われる事を、祈っております。
■Wan2.1_i2v_720p_14B_fp16/S/spread_anus_wanvideo_i2v.safetensors
https://huggingface.co/nashikone/iroiroLoRA/blob/main/Wan2.1_i2v_720p_14B_fp16/S/spread_anus_wanvideo_i2v.safetensors
※説明文
https://huggingface.co/nashikone/iroiroLoRA/blob/main/Wan2.1_i2v_720p_14B_fp16/S/spread_anus_wanvideo_i2v.txt
■Wan2.1_i2v_720p_14B_fp16/A/anal_piston_wanvideo_i2v_v3_phe.safetensors
https://huggingface.co/nashikone/iroiroLoRA/blob/main/Wan2.1_i2v_720p_14B_fp16/A/anal_piston_wanvideo_i2v_v3_phe.safetensors
※説明文
https://huggingface.co/nashikone/iroiroLoRA/blob/main/Wan2.1_i2v_720p_14B_fp16/A/anal_piston_wanvideo_i2v_v3_phe.txt
■Wan2.1_i2v_720p_14B_fp16/A/anal_female_ejaculation_wanvideo_i2v_epoch5.safetensors
https://huggingface.co/nashikone/iroiroLoRA/blob/main/Wan2.1_i2v_720p_14B_fp16/A/anal_female_ejaculation_wanvideo_i2v_epoch5.safetensors
※説明文
https://huggingface.co/nashikone/iroiroLoRA/blob/main/Wan2.1_i2v_720p_14B_fp16/A/anal_female_ejaculation_wanvideo_i2v_epoch5.txt
↑↑↑↑
```
2girls, koharu \(blue archive\),
yuri, couple,
pov hands, ass focus,
lying, on back, legs up, hand on another's ass,
anus, neck, navel,
embarrassed, tears, open mouth,
pussy, cleft of venus, completely nude, head wings, low wings,
onee-<年齢タグL>,
dark background, bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
anal, missionary, lying, legs grab,
large penis, pussy, completely nude, head wings, low wings,
blush, tears,
onee-<年齢タグL>, height difference,
dark background, bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
anal, standing on one leg, leg grab, arm support,
large penis, testicles, pussy, completely nude, head wings, low wings,
blush, tears,
onee-<年齢タグL>, height difference,
dark background, bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
```
2girls, hanako \(blue archive\), koharu \(blue archive\),
futa with female, futanari, yuri, couple,
anal, doggystyle, standing sex, against wall, leaning forward,
large penis, testicles, pussy, completely nude, head wings, low wings,
blush, tears,
onee-<年齢タグL>, height difference,
dark background, bed
Negative prompt: lowres,worst aesthetic,bad quality,worst quality,bad anatomy,sketch,jpeg artifacts,scan artifacts,lossy-lossless,ugly,poorly drawn,signature,watermark,text,ai-generated
```
（おわり）
