Nano Banana Pro speeds up my work! The “God’s Utilization Technique” to finish the PowerPoint document in a day.

Garbled text disappears!

Google’s latest image generation AI model “Nano Banana Pro” was released in November ’25. Users of the AI model have praised its dramatically improved comprehension and depiction accuracy of prompts (instructions), which has dramatically increased its usefulness in business and creative applications.

As a management consultant, I spend quite a lot of time creating documents, but with Nano Banana Pro, I can finish a document in one day, including revisions, instead of the one week it used to take me to create it with PowerPoint. The accuracy of the slide images and illustrations has also improved tremendously. It ‘s a godlike level of convenience. “

Mr. Yoshigi, a management consultant who works for a major consulting firm and publishes “AI work and job change techniques for your career” on X based on his in-depth knowledge of AI, also praises Nano Banana Pro.

What is so great about Nano Banana Pro? How is it different from other image generation AIs? Mr. Yoshiyuki points out the following four features.

Japanese language capability

One is that the accuracy of the Japanese words Nano Banana Pro generates in images has improved considerably. While other image generation AIs have a high probability of garbled text when inserting Japanese characters into images, Nano Banana Pro is almost always accurate in inserting text for flyers, posters, postcards, and so on. The number of cases of mysterious characters that look like Kanji but are not, as was the case in the past, has been dramatically reduced.

◇Maintaining the same characters

For example, let’s say we ask a customer to draw a four-panel comic in which a character explains a new product. Once we set up the character, we maintain the character’s appearance and draw his/her expression and pose properly in each frame. This prevents the character’s appearance from changing from one frame to the next.

◇Advanced photo compositing function

The ability to composite and edit multiple photos and images has been improved. If you upload images of (1) a businessman in his 30s, (2) a suit, and (3) an energy drink, and tell it to ‘combine the attached images to create an image of a businessman drinking an energy drink in a model-like pose in an office district,’ it will produce the exact image you requested.

◇Accurate reproduction of the instructed composition

They accurately understand specific layout instructions, for example, “Put the title at the top and the main design in the middle,” or “Place the character in the lower right corner of the screen. They are also very good at responding to requests for a 45-degree angle to give depth to the composition.

Adjectives are the key!

Nano Banana Pro is officially called “Gemini 3 Pro Image” and is commonly used through Google’s generative AI “Gemini” and AI assistant tool “NotebookLM” also provided by Google. Business applications include the creation of slide images, infographics, and diagrams for presentation materials and proposals, explanatory diagrams and illustrations for manuals, and posters and banners for events and advertising.

Mr. Yoshigi has an online salon where he lectures on how to utilize AI and social networking services for “double-dealing,” but he says that the most popular business use of interest among business people is visualization of presentation and seminar materials.

Just as with gathering information and researching with Gemini, creating images with Nano Banana Pro requires prompting,” he said. However, image generation is a deep process, and it is quite difficult to make the images look the way I want them to. I researched and tried quite a few prompts myself.”

We asked him to give us some tips and points to keep in mind when creating images to be inserted into slides of presentation materials using Nano Banana Pro.

It is important to be as specific as possible in conveying the title and main idea of the material. If you want to put the title in the image, you should instruct the presenter to “put the title in large letters at the top of the image.

For example, if you want the image to look like an illustration, a visual similar to a live-action picture, or a cartoon-like image, you can say something like, “Keep it simple,” or “Make it pop. Or you can use phrases such as “keep it simple” or “give it a pop feel,” and indicate the atmosphere of the image you want to create.

Also, be sure to communicate the content of the text to be included in the illustration or flowchart. It is important to be specific about all the elements you want to include in the image, using adjectives and adverbs.

A week becomes a day!

However, it is too early to try to create all presentation materials from scratch using only Nano Banana Pro. Mr. Yoshigi recommends “using different tools for different purposes” as an efficient method.

First, let’s start by having the presenter think about the structure of the presentation material using the “Canvas” tool in Gemini.

Canvas is a function that allows you to create, edit, preview, and output text on a single screen. To use Canvas, click the Tools button and select Canvas.

Create a draft of the structure of a slide presentation on the theme of “How to use social networking for business people.

Enter a prompt like this, and a draft slide structure will be presented to you.

Then, in the text field, enter the following instruction: “Generate a slide in Canvas based on this structure and make it previewable. In a few minutes, a number of slides will be generated according to the proposed structure. Then, by clicking “Export to Slides” in the upper right corner of the screen and exporting it to Google Slides, a presentation creation tool, it is possible to freely replace images on each page.

Google Slides is equipped with Gemini. So, if you want to make a professional finish to your slides, you can use Gemini’s Nano Banana Pro.

However, Gemini is not available in the free version of Google Slides. To create a “competition slide” with the free version, leave Google Slides and access Gemini again. To create a “competition slide,” leave Google Slides and go to Gemini again. Nano Banana Pro will start generating the image.

Once the image is generated, save it to your PC, open Google Slides, select the target slide, and replace it with the generated image. The free version limits the number of images that can be generated to about three per day, so it is best to use only for important slides.

The free version is limited to three generated images per day, so it is best to use it only for important slides. This combination is the best practice for creating highly complete documents from scratch in a short time.

The free version can do all of this, but with the paid version, Nano Banana Pro can be used on the “Google Slides” screen. With prompt input and click operations, you can instantly generate original slides. Depending on how often you use it, you may want to consider the paid version of “Google Workspace.

From Gemini?　From NotebookLM?

Nano Banana Pro can also be used with NotebookLM.

NotebookLM is a free AI assistant tool that reads user-uploaded materials (documents, PDFs, websites, etc.), summarizes the content, answers questions, and generates ideas.

With the integration of Nano Banana PRO, users can now generate slides and infographics based on the materials they read with a single click .

NotebookLM’s slide generation is extremely useful for creating materials. For example, let’s say you are creating materials for a seminar explaining the business chat tool ‘Slack.

Upload the URL of a website on how to use Slack to NotebookLM, select “Slide Documentation” from the panel on the right side, and in about 10 minutes, it will generate more than a dozen slides for you. There is no need to create prompts, dramatically reducing the time spent on creating materials.

Moreover, NotebookLM reads only the information I uploaded, so halcination (the phenomenon of generating information that is not true) is unlikely to occur. It ‘s very reliable in that respect. “

If it is that convenient, I would like to use NotebookLM to create images of documents in Nano Banana Pro. ……

Using Nano Banana Pro with NotebookLM is certainly a cosmetic way to create images. It is useful for quickly creating documents that you want to use right away.

However, NotebookLM doesn’t allow on-screen editing of the images that come out, and the output is limited to PDF. If I want to customize it by changing the text or adding slides myself, I’d rather use it in Gemini.”

In the spring of 2013, the image generation AI had a strong image of being a “processing tool for cartoon-like images,” but Nano Banana Pro has evolved into a “practical tool that can be used in business settings. However, Nano Banana Pro has evolved into a practical tool that can be used in the business world.

It’ s fun to experiment with different ways of creating images, and as you use it, I think the quality of the prompts will improve and you’ll be able to create images exactly as you want.