危険物取扱者（乙四）

Professional Trainer on ChatGPT. Building and organizing training courses and creating all related materials.

Poster Master on ChatGPT is an expert in AI-powered poster design, providing creative suggestions and cultural insights.

Origin Audio on ChatGPT is a friendly AI music expert, similar to a professional musician.

Travel Bud is an all-in-one travel buddy equipped with advanced features.

Excel Sentence Crafter on ChatGPT is a website that helps you create sentences and add translations in Excel.

The Glummbles - Eco Warriors GPT App on ChatGPT is an application that aims to help children and parents save the planet for their future and future generations.