Conclusions First
hime cut alone does not produce a hime cut. All 3 out of 3 output a short bob with bangs, and the hime cut characteristics (long back hair + straight sidelocks) are not reproduced.- Decomposing into component parts is the most reliable approach.
blunt bangs, straight sidelocks produces blunt bangs + straight sidelocks in all 3 out of 3. - Best precision with
hime cut, blunt bangs, long straight black hair. Combining hime cut with component specifications makes the sidelock step more distinct, and hair color stabilizes to black. princess cut hair / japanese hime cut hairstyle have no effect. The former produces regular long hair; the latter produces a short bob just like hime cut.
Recommended Prompts
| Use Case | Prompt | Token Count |
|---|
| Minimum | blunt bangs, straight sidelocks | 5 |
| With length | blunt bangs, cheek-length sidelocks, long hair | 7 |
| Maximum precision | hime cut, blunt bangs, long straight black hair | 8 |
Experiment Design
| Item | Value |
|---|
| Model | z-image-turbo (6B, photorealistic distillation) |
| Steps | 8 |
| CFG | 1.0 |
| Size | 1024×1024 |
| Seeds | 3 fixed (common to all conditions) |
| Framing | upper body |
| Per condition | 3 images (3 seeds) |
| Total | 10 conditions = 30 images |
Base Prompt
1girl, 32yo japanese actress, {VARIABLE}, white blouse, upper body, indoor studio, soft lighting
The white blouse + studio setup minimizes background and outfit information to focus on hair observation. Upper body framing captures bangs, sidelocks, and back hair length all in frame.
Components of the Hime Cut
The hime cut is a hairstyle with three elements:
- Blunt bangs (blunt bangs): Horizontally cut bangs from above to below the eyebrows
- Sidelocks (sidelocks): Straight hair cut level at chin-to-cheek height along the sides of the face
- Long back hair (long back hair): Long, straight hair in the back
This experiment compares “single-word specification” vs. “component decomposition.”
Evaluation Criteria
The following attributes were observed and recorded:
- Bangs: None / swept bangs / blunt bangs (horizontally cut)
- Sidelocks: None / naturally hanging hair / sidelocks cut level at chin-to-cheek
- Back hair length: Short / medium / long
- Hair straightness: Curly / loose wave / straight
A. Single-Word Expressions (5 conditions)
A00: Control (long black hair)
- Bangs: None (2/3), thin swept bangs (1/3)
- Sidelocks: None. Natural long hair hanging straight down
- Back hair: Long (3/3)
- 2 people appeared in seed 1 (
1girl present but studio setting may induce multiple people)
A01: hime cut
- Bangs: Blunt (3/3)
- Sidelocks: None (3/3). No back hair means no step difference
- Back hair: Short bob (3/3)
hime cut alone is interpreted as “short bob with bangs.” The step difference between sides and back — the most important characteristic of a hime cut — never appears
A02: hime cut, black hair
- Bangs: Blunt (2/3), none (1/3)
- Sidelocks: None (3/3)
- Back hair: Short bob (2/3), medium (1/3 — seed 3)
- Adding
black hair doesn’t change the bob tendency. Seed 3 is slightly longer but still no sidelock step
A03: hime cut, long hair
- Bangs: Blunt to swept (3/3)
- Sidelocks: None (3/3). Sides and back same length, no step
- Back hair: Long (3/3)
long hair brings back the long hair, but the “sidelock step” of hime cut doesn’t appear. Just “long hair with bangs”- 2 people appeared in seed 1 again
A04: princess cut hair
- Bangs: Thin swept (3/3). Not blunt
- Sidelocks: None (3/3)
- Back hair: Long (3/3)
princess cut hair produces output unrelated to hime cut. Essentially same as control — “swept bangs long hair.” In English-speaking contexts, “princess cut” refers to a diamond cut shape, so hair-style interpretation is weak
A09: japanese hime cut hairstyle
- Bangs: Blunt to swept (3/3)
- Sidelocks: None (3/3)
- Back hair: Short bob (3/3)
- Adding
japanese and hairstyle produces the same result as hime cut alone (A01). Descriptive longer expressions have no effect
B. Component Decomposition (4 conditions)
A05: blunt bangs, straight sidelocks
- Bangs: Blunt (3/3)
- Sidelocks: Straight sidelocks along the sides of the face (3/3)
- Back hair: Medium to long (3/3)
- All hime cut components appear. Clearly different result from single-word expressions (A01-A04, A09). Directly specifying
blunt bangs for the blunt cut and straight sidelocks for the straight side hair reproduces the intended hairstyle
A06: blunt bangs, cheek-length sidelocks, long hair
- Bangs: Blunt (3/3)
- Sidelocks: Straight sidelocks cut at cheek level (3/3)
- Back hair: Long (3/3)
- Adding
cheek-length and long hair to A05. Sidelock length more clearly contained at cheek level, back hair is long making the step difference more visually apparent
A07: straight bangs, sidelocks
- Bangs: Blunt (3/3)
- Sidelocks: Straight sidelocks (3/3)
- Back hair: Medium to long (3/3)
straight bangs is equivalent to blunt bangs. sidelocks alone (without straight) still produces sidelocks. No notable difference from A05
A08: hime cut, blunt bangs, long straight black hair
- Bangs: Blunt (3/3). Cleanly horizontal below the eyebrows
- Sidelocks: Straight sidelocks near jaw level (3/3). Step between sides and back is clear
- Back hair: Long, straight, black (3/3)
- Hair color: Black (3/3). Other conditions (A05-A07) sometimes produce dark brown, but this condition produces black in all 3
- The most hime cut-like output of all conditions. Combining
hime cut with explicit component specification causes hime cut to reinforce the sidelock step
Lab Director Comment: Yes, this is it. Blunt bangs + black straight hair + distinct sidelock step — perfect combo with jirai-kei style. The difference from A01’s bob output is stark.
Discussion
Why Does hime cut Alone Fail?
As a result, hime cut alone produces a short bob in all 3 out of 3. The reason is unknown, but it’s clear that the model cannot correctly interpret this term as a hime cut.
Why Component Decomposition Is Effective
blunt bangs and sidelocks are terms the model can correctly interpret as individual hair parts. Combining them reproduces each part independently.
Synergy of hime cut + Components
In A08, hime cut was combined with blunt bangs, long straight black hair. While hime cut alone produces a bob, long straight overrides the length, and hime cut additionally contributes to emphasizing the sidelock step. As a result, the sidelock step is more distinct than with components alone (A05-A07).
Success Rate Summary by Condition
| Condition | Bangs | Sidelocks | Long Back Hair | Hime Cut Result |
|---|
A00: long black hair (control) | ✗ | ✗ | ◯ | ✗ |
A01: hime cut | ◯ | ✗ | ✗ | ✗ |
A02: hime cut, black hair | △ | ✗ | ✗ | ✗ |
A03: hime cut, long hair | ◯ | ✗ | ◯ | ✗ |
A04: princess cut hair | ✗ | ✗ | ◯ | ✗ |
A05: blunt bangs, straight sidelocks | ◯ | ◯ | ◯ | ◯ |
A06: blunt bangs, cheek-length sidelocks, long hair | ◯ | ◯ | ◯ | ◯ |
A07: straight bangs, sidelocks | ◯ | ◯ | ◯ | ◯ |
A08: hime cut, blunt bangs, long straight black hair | ◯ | ◯ | ◯ | ◎ |
A09: japanese hime cut hairstyle | △ | ✗ | ✗ | ✗ |
So, hime cut alone becoming a bob — that’s such a trap. The component decomposition approach seems applicable to prompts in general. Since Japanese-origin hairstyle names appear to be weak for this model, other Japanese hairstyle names might be defeated the same way and need the same component-based approach.
Summary
hime cut alone doesn’t produce a hime cut (outputs a short bob)princess cut hair and japanese hime cut hairstyle are also ineffective- Minimum:
blunt bangs, straight sidelocks (5 tokens) achieves all 3 hime cut elements - Maximum precision:
hime cut, blunt bangs, long straight black hair (8 tokens) is the most stable for both step and hair color - Japanese cultural hairstyle names are weakly understood by the model — decomposing into components is the reliable approach
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