Vinland Saga is established in England beginning in 1013 A D, the year in which the Danish King Sweyn Forkbeard captured most of it. As King Sweyn nears death, his sons, Prince Canute and Prince Harald, are arguing over his succession.
In Hokkaido, the far northern lands of Japan, Sugimoto survived the Russo-Japanese war of the Meiji era. Nicknamed "Invincible Sugimoto" during the war, he now seeks the riches promised by the gold rush in hopes of saving the widowed wife of his now deceased comrade from the war.
The story begins when the gods call a convention to decide the whether to let humanity live or die, and settle on destroying humanity. But a lone valkyrie puts forward a suggestion to let the gods and humanity fight one last battle, as a last hope for humanity's continued survival.
Millions of years have passed since the times of legends, when the worlds of man and gods were still the same. In these times it was the desires of man that moved the world. It is the era of the 500 year war - The Warring States period (403-222 BC in Chinese history).
Kuroshitsuji manga summary:
All the members of my sect are abnormally strong. All my disciples turn out to be big shots, and I'll definitely become invincible in this world!
One day, the Marquess’s daughter Julianne suddenly regained the memories of her previous life and reflected on her behavior up to this point.