Accel World, Vol. 27 (light novel)

New warriors have suddenly appeared on the “Brain Burst 2039” battlefield — the “Drive Linkers.” This marks the beginning of an invasion by the fourth Accelerated World, “Dread Drive 2047.” The invaders’ vanguard, Eurochion, bested Burst Linkers with overwhelming strength. And amidst the battle, Silver Crow gains new powers! The outcome of this “Inter-World War” may determine the very fate of Brain Burst!