High Contrast - 50-70% Tenebrism

Dark background with high contrast, LoRA was trained for tenebrism, but is not successful.

Trigger word: black background, dark

From the Italian tenebroso: meaning dark, gloomy, mysterious. Tenebrism describes a compositional technique in which some areas of an image are kept completely black, allowing other areas to be strongly illuminated, usually from a single source of light. It is distinct from chiaroscuro because there is no attempt to include forms in the darkness. Chiaroscuro is commonly employed to enhance the modelling of human figures, not to focus the viewer's attention or blacken whole areas of the canvas for dramatic effect. Thus it is not uncommon for both tenebrism and chiaroscuro to be used in the same canvas.

I mean as long you see a pure black color in somewhere of the image, only one light source, usually from direct, then you can call it tenebrism :D

Work well with any ratio

Recommend weight between 0.7-1

Notes:

Won't work with other LoRA
This will work if you understand what I'm talking about :D
Just consider it as a light contrast LoRA at this point :D
Think about prompting and situation you setting up, this will work alright or don't have the effect I describe
Hires-fix, Adetailer recommend