Reborn as the historically nonexistent eldest son of Holy Roman Emperor Joseph II and Queen Isabella, the elderly Charles VIII declared: "I have done only one thing in my life: uphold Habsburg leadership and lead Rome towards revival."

Travel back in time to 19th-century Greece and witness his rise from a small Balkan nation. Lead Greece to its great ideals, restore the glory of Rome, and make the name of "Rome" known from Ireland to Khitan! And this is Constantine, the only sun of the Balkan Peninsula, the heir of Komnenos, the second Aristotle, the world's restorer, the Turkic butcher, and the loving father of the Roman people: Rome has only one chance to be revived. If you don't seize it, then let me do it!

A history student is unexpectedly reborn as Kaiser Wilhelm II in 1915, during the raging flames of World War I. He decisively halts the deadly submarine war, champions the technological revolution of tanks and aircraft, strategically sows discord among the Allies, and secretly funds the spark of the Russian Revolution. From breakthroughs on the Eastern Front to the formidable Western Front, from court intrigue to diplomatic backroom deals, he leads Germany to defy historical destiny, triumph over the war, and forge a Central European alliance centered on Berlin. This is a clash of modern thinking and imperial ironclad force, witnessing the "disabled hand" reshaping the world.

1. When Lin Yan, a science and engineering student, opened his eyes, he found himself as Chamberlain at 10 Downing Street in 1939—a declaration of war against Germany lay on the table, and outside the window, the countdown to the collapse of British hegemony was underway. But clutching his Zippo (his only token of the future), he was determined to overturn the script and personally rebuild British glory at 10 Downing Street.