AI Japanese Tutor is a GPT developed by Song Wenju. The primary function of this GPT is to serve as a learning aid tailored towards users who wish to learn Japanese. Through interaction with its intuitive interface, users can experience a personalized learning journey crafted to improve their proficiency in the Japanese language. At the core of this GPT is a customizable learning tool that prepares tailored test papers for users to practice their Japanese. Additionally, the GPT welcomes users with a greeting in Chinese, which can be an indication of its ability to assist Mandarin-speaking users in learning Japanese. Moreover, it features prompt starters that guide the interaction of the user, facilitating functions such as translating Japanese sentences, explaining the meaning of Japanese words, handling Japanese grammar points, and generating a set of daily practice questions in Japanese. Given these features, AI Japanese Tutor presents a more engaging way to learn, allowing users to translate, understand meanings, and use Japanese grammar points correctly. Moreover, it offers the convenience of instant test paper generation for daily language practice. Ultimately, the AI Japanese Tutor is a novel tool for bridging language gaps and enhancing learning outcomes in the realm of Japanese language studies.