The Abyss—a gaping chasm stretching down into the depths of the earth, filled with mysterious creatures and relics from a time long past. How did it come to be? What lies at the bottom? Countless brave individuals, known as Divers, have sought to solve these mysteries of the Abyss, fearlessly descending into its darkest realms. The best and bravest of the Divers, the White Whistles, are hailed as legends by those who remain on the surface. Riko, daughter of the missing White Whistle Lyza the Annihilator, aspires to become like her mother and explore the furthest reaches of the Abyss. However, just a novice Red Whistle herself, she is only permitted to roam its most upper layer. Even so, Riko has a chance encounter with a mysterious robot with the appearance of an ordinary young boy. She comes to name him Reg, and he has no recollection of the events preceding his discovery. Certain that the technology to create Reg must come from deep within the Abyss, the two decide to venture forth into the chasm to recover his memories and see the bottom of the great pit with their own eyes. However, they know not of the harsh reality that is the true existence of the Abyss. [Written by MAL Rewrite]

Dr. Kenzou Tenma, an elite neurosurgeon recently engaged to his hospital director's daughter, is well on his way to ascending the hospital hierarchy. That is until one night, a seemingly small event changes Dr. Tenma's life forever. While preparing to perform surgery on someone, he gets a call from the hospital director telling him to switch patients and instead perform life-saving brain surgery on a famous performer. His fellow doctors, fiancée, and the hospital director applaud his accomplishment; but because of the switch, a poor immigrant worker is dead, causing Dr. Tenma to have a crisis of conscience. So when a similar situation arises, Dr. Tenma stands his ground and chooses to perform surgery on the young boy Johan Liebert instead of the town's mayor. Unfortunately, this choice leads to serious ramifications for Dr. Tenma—losing his social standing being one of them. However, with the mysterious death of the director and two other doctors, Dr. Tenma's position is restored. With no evidence to convict him, he is released and goes on to attain the position of hospital director. Nine years later when Dr. Tenma saves the life of a criminal, his past comes back to haunt him—once again, he comes face to face with the monster he operated on. He must now embark on a quest of pursuit to make amends for the havoc spread by the one he saved. [Written by MAL Rewrite]

The Great War finally came to an end after four long years of conflict; fractured in two, the continent of Telesis slowly began to flourish once again. Caught up in the bloodshed was Violet Evergarden, a young girl raised for the sole purpose of decimating enemy lines. Hospitalized and maimed in a bloody skirmish during the War's final leg, she was left with only words from the person she held dearest, but with no understanding of their meaning. Recovering from her wounds, Violet starts a new life working at CH Postal Services after a falling out with her new intended guardian family. There, she witnesses by pure chance the work of an "Auto Memory Doll," amanuenses that transcribe people's thoughts and feelings into words on paper. Moved by the notion, Violet begins work as an Auto Memory Doll, a trade that will take her on an adventure, one that will reshape the lives of her clients and hopefully lead to self-discovery. [Written by MAL Rewrite]

Young Thorfinn grew up listening to the stories of old sailors that had traveled the ocean and reached the place of legend, Vinland. It's said to be warm and fertile, a place where there would be no need for fighting—not at all like the frozen village in Iceland where he was born, and certainly not like his current life as a mercenary. War is his home now. Though his father once told him, "You have no enemies, nobody does. There is nobody who it's okay to hurt," as he grew, Thorfinn knew that nothing was further from the truth. The war between England and the Danes grows worse with each passing year. Death has become commonplace, and the viking mercenaries are loving every moment of it. Allying with either side will cause a massive swing in the balance of power, and the vikings are happy to make names for themselves and take any spoils they earn along the way. Among the chaos, Thorfinn must take his revenge and kill Askeladd, the man who murdered his father. The only paradise for the vikings, it seems, is the era of war and death that rages on. [Written by MAL Rewrite]