In this paper, we develop a Virtual Reality-based immersive learning environment that allows teachers to conduct a lesson in a virtual space using Photon Fusion. The proposed system allows teachers and students to be present in the same virtual space regardless of their actual physical locations. The teachers can verbally communicate with students in real-time, interacting with 3D learning materials. By adopting Photon Fusion, the system achieves stable real-time communication and synchronization among multiple players. Evaluation results demonstrate that the proposed system provides stable communication performance, good usability, and minimal VR sickness, confirming its effectiveness as an immersive learning environment.

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