This style adds glowing bokeh particles to images. At full strength it can add ludicrous amounts of bokeh, or you can lower the weight and/or drop the trigger for a more subtle effect.
It typically comes through even if you don't mention bokeh, though the trigger (n0vuschr0ma style) can help a lot. You can optionally add modifiers to your prompt like "bokeh", "dreamy bokeh", "surrounded by bokeh", "magical bokeh", "glowing bokeh", "bokeh background", "dreamy photography", or "moody photography"... depending on what you're going for.