I came back but the world is still a fantasy!?

When a boy coincidentally fell into a dimension hole, what awaited him was a world of sword and magic. Two years of tragedies, wars, and schemes, passed until he was finally able to return to Earth. But when he came back, the world was no longer the same. A new world with advanced technology, Garesto, was now trading with Earth, leading to a complete overhaul of Earth’s technology. In the long years that have passed and the great changes that have occurred, his family was not left untouched. His parents were now divorced. His siblings were now strangers. And all his friends were now gone. He who possessed otherworldly power and knowledge hid himself for various reasons. But though he was able to somehow pull the wool over the world’s eyes, there were still those who noticed him. This is a tale that came to be because of a boy who came back home. IMPORTANT (for Neo Translations and nadenadeshitai releases): This story is NOT released in CHRONOLOGICAL ORDER, and is meant to be read according to the RELEASE ORDER. Also those are NOT volumes, they’re time axes. NOTE (for Neo Translations): The first six releases are PROLOGUES, main chapters start from the seventh release onwards.