Over 600 image dataset of official Nikke artwork including background artwork.
I DIDNOT captions the characters names. This is a style LoRA.

Tips:
1) Trigger: "Nikke style"
Stronger Trigger: "Nikke style anime"
Additional Triggers:
"Theme: ___________ themed Nikke"
"Nikke Style background"

2) Avoid Stylizers like "painting, 4k, masterpiece, highly realistic, highly detailed"
You don't need any of that...just describe the nouns and let the LoRA do the style work.

3) I gave each Nikke a theme like Gangster Nikke or bunny girl Nikkie or swimsuit Nikke or Sci-Fi Nikke, etc. using "theme: magical girl Nikke" Will give good results.

4) Caption were done in sections and this will get good results.

Captioned in sections:
Summary (over all concept)
Theme
Attire
Pose
Hair
Weapon/Firearm
Expression
Nikke Style, Background

5) Background art was captioned as "Nikke style Background" and objects were tagged. That was half the dataset LORA should be able to to make background art with no people in it great.

Nikke Style, Background

Concept

Industrial sci-fi laboratory interior with a central mechanical entity under maintenance lighting

Major Objects

Central Mechanical Entity — metallic silver body with light-blue angular protrusions resembling ears or sensors; circular glowing lens on left side; complex internal gears visible through cutaway panels; mounted on elevated platform with railings

High-Voltage Warning Sign — green-yellow sign above door labeled “DANGER HIGH VOLTAGE” with lightning bolt symbol

Ceiling Skylight Panels — rectangular translucent windows emitting bright cool-white illumination from overhead

Metallic Maintenance Platform — raised steel structure beneath main unit featuring warning tape (yellow-black stripes) and access ladders

Control Console Units — gray industrial machines below platform displaying digital readouts and indicator lights