According to a WHO survey, approximately 80 million people worldwide are estimated to require a wheelchair for mobility. Many wheelchair users feel anxious when navigating barriers such as steps and slopes, as these obstacles can increase the risk of accidents, including falls. To alleviate this anxiety, extensive research has been conducted on VR wheelchair simulators that enable users to experience the sensation of overcoming barriers in advance. To provide users with an effective simulation experience, it is necessary to build a simulator that gives them a sense of immersion as if they were actually passing through barriers. The realism of VR visuals is considered an important factor in VR simulators, as it affects the sense of immersion in the simulation. However, building an effective simulator requires the work of technically skilled individuals, resulting in significant labor costs. In particular, creating VR visuals incurs high labor costs, as it requires detailed settings such as generating intricate textures and arranging objects to create an illusion of a real-world environment. From this perspective, it is necessary to develop a simulator that provides users with the sensation of passing through barriers using low-realism VR visuals. However, it remains unclear whether the realism of VR visuals affects the degree to which users feel they have passed through a barrier. This paper describes an experimental plan to clarify whether the realism of VR visuals in a VR wheelchair simulator affects the degree to which users perceive the sensation of passing through a barrier.