Nano Banana Pro Handwriting Generation Prompt

A detailed prompt for Nano Banana Pro designed to generate a single line of Japanese handwritten text in a specific feminine, stylish, and airy aesthetic. It specifies the writing instrument (fine gel pen), stroke characteristics (thin, light, monoline), and introduces intentional irregularities in character size, spacing, and baseline slant to mimic natural handwriting. The prompt explicitly requires reference images for style guidance and includes a negative prompt to avoid brush/calligraphy styles.

Prompt

Use the attached reference images as the handwriting style guide (especially the second image with handwriting samples). Create a single line of Japanese handwritten text on clean white paper. Written with a fine gel pen / fineliner (0.3–0.4mm look), thin and light strokes, mostly monoline (no brush or marker look). Match a stylish, airy, feminine handwriting feel: soft curves, light touch, and a slightly right-leaning slant.Add clear personality through noticeable character size variation (some characters 10–25% larger/smaller), irregular spacing, and a gentle upward baseline from left to right. Add elongated entry and exit strokes (long, tapered starts/tails) on a few characters—especially the first character, any elongated/extended marks in the text, and the final character—while keeping everything readable.Write exactly this text: "The true chocolate tasted like an adult's." No extra text, no borders, no logos, no underline, no decorative swoosh lines. High resolution, sharp thin ink lines, minimal paper texture.
Negative:
brush pen, calligraphy, shodo, marker, thick strokes, bold ink, heavy pressure, paintbrush, blocky lettering, uniform character size, perfect spacing, perfectly straight baseline, printed font, typeset, outline font, extra words, watermark, frame, stamps, underline, swoosh line, doodles
Extra:
Keep strokes thin; create expressiveness mainly with size/spacing/baseline and tapered stroke ends, not thickness.Increase character size contrast and spacing irregularity, but keep legibility.

How to use this prompt

Copy the prompt above and paste it into an AI image generator such as Google Gemini (Nano Banana) or a similar tool. Replace any bracketed placeholders with your own details, then generate and refine the result.

This prompt is designed to work with a reference photo. Upload your own photo (only one you have the right to use) together with the prompt.

Prompt collection credit: YouMind Awesome Nano Banana Pro Prompts (CC BY 4.0). Credit to the original prompt creators. To request removal of a prompt or image, please contact us.