Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs (Light Novel) Vol. 13

The war with the empire has finally begun! As new and old humanity's descendants fight for survival, Leon, Luxion, and the idiot brigade try to get past Arcadia's defenses. If they survive and reach the fortress, it'll mean facing off with Finn! Even leaning on Luxion might not get Leon and his friends out unscathed...