In the late Edo period, Japan had experienced an unprecedented crisis by Kurofune (Black Ships), the ships from foreign countries. But a giant robot called Onigami, which has existed since ancient time, dispelled the Kurofune ships and the exclusion of foreigners was accomplished. The story begins in Japan where Meiji restoration in 1868 didn't happen. The tagline says, "I can be the greatest man in the world, because I am a virgin!!" (Source: Crunchyroll)

At the Battle of Sekigahara in 1600, Toyohisa Shimazu is the rearguard for his retreating troops, and is critically wounded when he suddenly finds himself in a modern, gleaming white hallway. Faced with only a stoic man named Murasaki and hundreds of doors on both sides, Toyohisa is pulled into the nearest door and into a world completely unlike his own. The strange land is populated by all manner of fantastical creatures, as well as warriors from different eras of Toyohisa's world who were thought to be dead. Quickly befriending the infamous warlord Nobunaga Oda and the ancient archer Yoichi Suketaka Nasu, Toyohisa learns of the political unrest tearing through the continent. Furthermore, they have been summoned as "Drifters" to fight against the "Ends," people who are responsible for the creation of the Orte Empire and are trying to annihilate the Drifters. As the Ends grow more powerful, so does the Empire's persecution of elves and other demihumans. It is up to Toyohisa and his group of unconventional heroes to battle in a brand-new world war to help the Empire's subjects, while protecting the land to claim for themselves and challenging the Ends. [Written by MAL Rewrite]

In the nineteenth century, we find Lydia Carlton living in Scotland, making a living as a fairy doctor. She is one of those rare humans who can see and communicate with fairies. But no one believes her. However, Edgar is in need of someone with a vast knowledge of fairy lore, and Lydia is just that person. After rescuing her, he becomes her employer, but there are many secrets and emotions that seem to follow Edgar, who claims to be the Blue Knight's Earl.

Emma has been a maid for most of her life. Working for a retired governess—the strict but compassionate Kelly Stownar—Emma has grown to love her work and has long since accepted her place in society. Beautiful, hardworking, and exceptionally kind, Emma has captured the hearts of many of London's working men—but their feelings always remain unrequited. Emma is waiting for love, and she finds it in the most unlikely of places. William is the eldest son of the wealthy Jones household—a family that has only recently been accepted into the gentry, securing their position in high society. He is also the former ward of Mrs. Stownar, and on his first visit in years, he falls madly in love with her maid. His earnest attempts to win her affection, coupled with his good nature and warm personality, have captured Emma's heart. But the polite society of 19th century England does not take kindly to the rejection of tradition. As a result, Emma and William's relationship could not face more opposition. In a world where the class lines are as strongly defended as the borders of nations, does their love have the strength to survive? [Written by MAL Rewrite]