As its name implies, this is a variation of the Burai that mounts a Radiation Wave arm unit. During the early development stages of the game Code Geass: Lelouch of the Rebellion - Lost Colors, Rai was supposed to pilot this machine if he were to join The Order of the Black Knights. However, the idea was rejected and the Burai Experimental Radiant Wave Type lost its role in favor to the Gekka Pre-Production Test Type.