Click "Generate". Receive tomboy. Simple as.

How to use
Prompt as usual, tags that work well are "tomboy" (very strong tag), "tanlines", "swimsuit", "short hair", "skintight" and general tomboy tropes.
Somewhat unsurprisingly perhaps the dataset contains a lot of sportswear so this LyCORIS may occasionally put text, logo or numbers on clothing.
It's usually a sign the strength is set too high for whatever you're prompting so try lowering it by 0.1 if it happens. Or just inpaint it.
For more specific prompt tips please see the sample images or the uploaded zip with training tags.

MISC
Dataset of 48 images, most manually cleaned and processed, trained at 768 resolution on NAI.
All sample images are raw txt2img upscaled, no helper embeddings/negatives used. E.g. - things should look even better if you do.
The training was done on a small subset of images, as such the output of this LyCORIS is not an accurate representation neither in quality or style of the source material. Go support the artist if you want the good stuff.