A Returner's Magic Should Be Special, Vol. 6 -

OUT OF THE SHADOWS...Desir and his friends have arrived in Romantica's homeland, Prilecha Kingdom, for a not-so-relaxing vacation. But amid the training, politics, and celebration, an explosion shatters any illusion of peace. While Desir has been preparing for the inevitable destruction of the world, a mysterious group of Outers has been plotting as well--and they have decided to strike. The royal palace becomes a battleground as Desir's party clashes with the most powerful enemies they've ever met!