The world's greatest assassin had sworn lifelong allegiance to the organization that raised him. However, despite his loyalty, that very same organization takes action to silence him, ultimately leading to his demise. Drowning in frustration and regrets he can no longer suppress, he finds himself in an audience with a goddess attracted by his exceptional skills. The goddess offers him reincarnation into a magnificent world of swords and magic so he can perform a crucial mission: prevent that world's destruction by slaying its hero. Accepting the goddess' request, he is reborn as Lugh Tuatha Dé, the son of a noble family of assassins serving the Alvan Kingdom. Under the guidance of his father, Lugh learns new assassination techniques that significantly differ from the cold-blooded and unsympathetic killing style of his previous life. Furthermore, his other talents bloom, allowing him to meet new allies and acquaintances. Even so, Lugh knows that his efforts are far from adequate, because a monumental adversary such as the hero can only be defeated with perfection. [Written by MAL Rewrite]

Far away from the reaches of demons and war, near the borderland of Zoltan, D-Rank adventurer Red lives a normal existence. Through perseverance and hard work, his dream of starting his own apothecary and peaceful life in the countryside finally came true. Abruptly, Red gets a live-in partner and assistant named Rit—the princess of Duchy Loggervia and an adventurer herself—who gives everything up to join him. Although honest, kind, and loved by all, Red has a secret shared only with Rit: his real name is Gideon, brother of Ruti Ragnason, the "Hero" and a former member of her party. Ares Drowa, the "Sage," kicked Red out of their party after their war against the Demon Lord after deciding he was weak and insignificant. Now, even though Red has left the Hero's party behind by assuming a new life together with Rit, his past has yet to let go of him. [Written by MAL Rewrite]

The Taira clan, also known as the Heike, holds immense authority over Japan. When a young girl, gifted with an odd eye that allows her to see the future, foolishly disrespects the clan, her father pays the price of her crime with his life. Soon after, as fate would have it, Taira no Shigemori—the eldest son of the clan leader—stumbles upon the same unfortunate girl, who now calls herself "Biwa." Biwa informs him that the downfall of the Heike is imminent. After learning of the great injustice Biwa suffered at the Heike's hands, Shigemori vows to take her in and care for her rather than let her be killed. In an era of rising military tension, the Heike are in the midst of a cunning struggle for power, and bloodstained war is on the horizon. Shigemori, whose eyes allow him to see spirits of the dead, is both anxious and hopeful to prevent his clan's demise. Biwa, however, is reluctant to reveal the future to him and must adapt to her new life filled with both happiness and sorrow in this pivotal chapter in Japanese history. [Written by MAL Rewrite]

Madness and unawakening sleep, Randolph syndrome. This new illness is slowly but steadily approaching humanity, caused by the huge underground world Asylum that appeared in Antarctica. There are strange creatures different from the earth, and unknown resources. People bet their lives on the depths of the mysterious new world to get huge wealth, organizational plots, or their own ambitions. And here alone, a young man with a wish in his heart is trying to challenge the front line of Asylum. (Source: MAL News)