I, Kill

Both are zombie dramas set in ancient eras, with [Kingdom] set in Korea's Joseon era. The female lead of [I, Kill] is similar to the one in the Korean drama, as both work as assistants to a doctor in a remote village. [Kingdom] focuses more on the male lead, the Crown Prince, while the Japanese drama's main female lead is a former ninja.

Both are zombie dramas set in ancient times, with [Kingdom] taking place during Korea's Joseon era. The female lead in [I, Kill] is reminiscent of the one in the Korean drama, as both characters serve as assistants to a doctor in a remote village.

[Kingdom Season 2] concentrates more on the struggles of the living inside the castle in Hanyang city when another outbreak spreads. To protect innocent citizens, the crown prince and his allies risk their lives once again, facing not only the undead but also the court's political conflicts.

[Rampant] is a story about a zombie outbreak set in ancient times. Similar to [I, Kill], the protagonists struggle to survive while pursuing their individual goals and protecting their loved ones.