In this study, we develop a system that uses Mixed Reality (MR) to support residents in making disasters personal by facilitating the construction of disaster images of their own town. Using this system, we will reproduce disaster situations based on the assumptions of hazard maps and the memories of disaster victims. The system also allows multiple residents to share the recreated images of the disaster so that they can communicate with each other while recreating the disaster. In this study, we conducted an evaluation experiment with residents and verified the effectiveness of the system through questionnaires and opinion exchange meetings. As a result, we confirmed the effectiveness of the MR-based system in terms of imagining disasters and making disasters personal.