Various types of software have been developed for various applications. The functions software implemented are increasing, and also the operation methods are becoming more complicated. However, it is also difficult for users to learn how to operate the software, and much effort and cost is required. Tutorial systems are considered to be the most suitable means of learning the operation methods of software efficiently. Tutorial systems help a user to learn the operation methods of software by demonstrating them. In this paper, we propose a method for a tutorial system generated using use case diagrams and sequence diagrams in UML (Unified Modeling Language), and it is added to software automatically.