In Another World With My Smartphone: Volume 30 (Light Novel) — Patora Fuyuhara

The Ark infiltration plan is finally in motion. With sacred treasure and strengthened Frame Gears, Touya and the girls are running out of time to make memories with their future children. As the continent’s powers learn of the enemy’s gold crown, Touya needs to convince them that their Gold is an ally. What exactly is the true goal of the wicked devout’s gold crown? More importantly, could glasses be the key to saving the world? Find out in this tale of spectacles, decisive battles, and god-induced headaches!