diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Gradio.NET: Build Machine Learning Web Apps — in .NET [![main](https://github.com/feiyun0112/Gradio.Net/actions/workflows/main.yml/badge.svg)](https://github.com/feiyun0112/Gradio.Net/actions/workflows/main.yml) [![NuGet](https://img.shields.io/nuget/v/Gradio.Net.svg)](https://nuget.org/packages/Gradio.Net)
 
-**English** | **[简体中文](readme_files/README_zh-cn.md)**
+**English** | **[简体中文](readme_files/README_zh-cn.md)** | **[日本語](readme_files/README_ja.md)**
 
 Gradio for .NET – a port of [Gradio](https://github.com/gradio-app/gradio), an open-source Python package that allows you to quickly **build** a demo or web application for your machine learning model, API, or any arbitrary Python function. *No JavaScript, CSS, or web hosting experience needed!*
 
diff --git a/readme_files/README_ja.md b/readme_files/README_ja.md
new file mode 100644
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+# Gradio.NET: .NETで機械学習Webアプリを構築 [![main](https://github.com/feiyun0112/Gradio.Net/actions/workflows/main.yml/badge.svg)](https://github.com/feiyun0112/Gradio.Net/actions/workflows/main.yml) [![NuGet](https://img.shields.io/nuget/v/Gradio.Net.svg)](https://nuget.org/packages/Gradio.Net)
+
+**[English](../README.md)** | **[简体中文](readme_files/README_zh-cn.md)** | **日本語**
+
+Gradio for .NET – [Gradio](https://github.com/gradio-app/gradio) の .NET 移植版で、機械学習モデル、API、または任意のPython関数のデモやWebアプリケーションを迅速に**構築**するためのオープンソースのPythonパッケージです。*JavaScript、CSS、またはWebホスティングの経験は不要です！*
+
+![demo](./demo.gif)
+
+上記のような美しいデモを作成するには、ほんの数行の .NET コードが必要です。それでは始めましょう 💫
+
+### 最初のデモを構築する
+
+- 1. ASP.NET Core Web API プロジェクトを作成します。
+
+- 2. NuGet パッケージ **Gradio.Net.AspNetCore** をインストールします。
+
+- 3. Program.cs にサンプルコードを入力します:
+
+
+```C#
+App.Launch(await CreateBlocks());
+
+async Task<Blocks> CreateBlocks()
+{
+    using (var blocks = gr.Blocks())
+    {
+        gr.Markdown("Start typing below and then click **Run** to see the output.");
+        Textbox input, output;
+        using (gr.Row())
+        {
+            input = gr.Textbox(placeholder: "What is your name?");
+            output = gr.Textbox();
+        }
+        var btn = gr.Button("Run");
+        await btn.Click(fn: async (input) => gr.Output($"Welcome to Gradio.Net, {Textbox.Payload(input.Data[0])}!"), inputs: new[] { input }, outputs: new[] { output });
+
+        return blocks;
+    }
+}
+```
+
+これで完了です🎉🎉🎉
+
+**既存のプロジェクトで **Gradio.Net.AspNetCore** を使用したい場合**
+
+`AddGradio` と `UseGradio` 拡張メソッドを使用できます：
+
+```C#
+var builder = WebApplication.CreateBuilder(args);
+builder.Services.AddGradio();
+
+var app = builder.Build();
+
+app.UseGradio(await CreateBlocks());
+
+app.Run();
+```
+
+### デモ
+
+| Source Code | Demo Image |
+| ----------- | ---------- |
+| [Layout](./layout_demo.md) | ![image](./layout_demo.gif) |
+| [Form](./form_demo.md) | ![image](./form_demo.gif) |
+| [Media](./media_demo.md) | ![image](./media_demo.gif) |
+| [Chatbot](./chatbot_demo.md) | ![image](./chatbot_demo.gif) |
+| [Progress](./progress_demo.md) | ![image](./progress_demo.gif) |
diff --git a/readme_files/README_zh-cn.md b/readme_files/README_zh-cn.md
index c8da97a..5f9ae90 100644
--- a/readme_files/README_zh-cn.md
+++ b/readme_files/README_zh-cn.md
@@ -1,6 +1,6 @@
 # Gradio.NET: 使用 .NET 生成机器学习 Web 应用 [![main](https://github.com/feiyun0112/Gradio.Net/actions/workflows/main.yml/badge.svg)](https://github.com/feiyun0112/Gradio.Net/actions/workflows/main.yml) [![NuGet](https://img.shields.io/nuget/v/Gradio.Net.svg)](https://nuget.org/packages/Gradio.Net)
 
-**[English](../README.md)** | 简体中文
+**[English](../README.md)** | **[简体中文](readme_files/README_zh-cn.md)** | **[日本語](readme_files/README_ja.md)**
 
 Gradio for .NET – [Gradio](https://github.com/gradio-app/gradio) 的 .NET 移植，Gradio是一个开源 Python 包，允许您为机器学习模型、API 或任何任意 Python 函数快速构建演示或 Web 应用程序。*无需任何 JavaScript、CSS 经验！*