Fuyuhara, Patora

Sixteen-year-old Grand Duke of Brunhild, Mochizuki Touya, enters the Hangar of Babylon and becomes a mecha pilot in an ancient humanoid fighting machine called a Frame Gear to stop the incoming Phrase.

While trying to get the hang of leading his nation, sixteen-year-old Grand Duke of Brunhild, Mochizuki Touya, decides to throw a party for the other royals in the region. Touya also continues his search for truth as he visits forests and mountains around his nation. His investigation brings him under the scrutiny of the Pope and the Vatican and he is soon defending his right to be the Grand Duke.

As sixteen-year-old Mochizuki Touya searches for the Second Babylon, he finds danger at every turn including The Phrase, the world boundaries beginning to strain, and a mysterious monochrome boy. Soon Touya and his friends discover that the government is on the brink of a military coup and they wonder if they have any chance of surviving this latest adventure.

Mochizuki Touya travels to the land of Eashen because the Matriarch of the Fairy Clan wants him to explore some ancient ruins. There Touya and his friends become caught in the middle of a battle between warlords Takeda Schingen and Tokugawa Ieyahsu. Meanwhile, a necromancer schemes in the shadows.

Fifteen-year-old Mochizuki Touya may have died on earth, but in another world he's assembled a team of adventurers to travel to the demi-human kingdom of Mismede. But facing challenges from the beastman king and a black-scaled dragon, Mochizuki may not be long for this world either.

When fifteen-year-old Mochizuki Touya is killed by lightening, God informs him that He made a mistake and reincarnates Mochizuki into a strange fantasy world. Now Mochizuki takes in his surroundings and sets off to explore this strange and fascinating new place he calls home.