In Another World With My Smartphone

A 16-year-old named Mochizuki Touya is the Grand Duke of an upstart nation, inventor, administrator of Babylon, and pilot of the Anti-Phrase Frame Gears. The western nations love him, but he faces darker machinations from Yulong, the glorious Empire of Heaven, who sends assassins into Brunhild. A mysterious young girl named Sakura seems to have a connection with these assailants. Brace yourself for a tale full of swords, sorcery, and absolute calamity.