Joe Higan is a Nukenin – a former ninja who escaped his clan and is hiding from his violent past in rural America with his family. One night, he is ambushed by a team of assassins from his former organization who exact a bloody retribution on Joe and his family for betraying their ancient code. Rising from his seeming "death," Joe will re-emerge as his former self – Ninja Kamui – to avenge his family and friends. Kamui is a 21st century ninja, a shadowy anachronism who pits his ancient skills against high-tech weaponry with brutal finesse. He must face off against trained assassins, combat cyborgs, and rival ninjas to bring down the very clan that made him.

Maomao, an apothecary's daughter, has been plucked from her peaceful life and sold to the lowest echelons of the imperial court. Now merely a maid, Maomao settles into her new mundane life and hides her extensive knowledge of medicine in order to avoid any unwanted attention. Not long after Maomao's arrival, the emperor's infant children inexplicably begin to experience grave symptoms—almost as if a curse has been cast. The curious Maomao easily solves the mystery and, to remain out of the limelight, attempts to leave an anonymous tip. Unfortunately, the dashing and perceptive eunuch Jinshi sees through it and manages to single her out. In recognition of her talent, Maomao is promoted to lady-in-waiting for the emperor's favorite concubine, Gyokuyou. As Maomao continues to remedy the numerous ailments afflicting the imperial court, her pharmaceutical expertise quickly proves indispensable.

"The New Gate" is an online life-or-death game with tens of thousands of players. Thanks to Shin, the most skilled veteran player, the other players will finally be released from the game. Shin has killed the last boss and believes he is finally able to escape when he is blinded by a flash of mysterious light. He awakes to find himself in the game's world 500 years later! So begins a new chapter in the life of an unsurpassed legendary player!

Although everything the young duke touches perishes, his existence is far from lonely. His spirited siblings Viola and Walter, loyal butler Rob, and the eccentric witches Cuff and Zain are regularly livening up his secluded mansion. But it is the duke's flirty maid, Alice Lendrott, who fills him with the promise of a beautiful tomorrow and the determination to break this hellish spell cast upon him. The identity of the witch who cursed the duke has been uncovered thanks to Zain's unique magic and the help of Daleth, the leader of the underworld. However, the villain is a notoriously fearsome and powerful witch, who, enraged by the duke and his companions' trip back in time, torments them even from the afterlife. Moreover, an unexpected loved one reappears, strengthening the duke and Alice's hope to break the curse and finally close the distance between them.