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When I first attained immortality, I was so happy. I truly thought living forever would be a blessing but it turned out to be a monotonous curse. You'll learn that soon enough. Dying may be painful, but living day after day without end is even more unbearable.
~ The King of the Night expressing his desire to die to Ayumu

The King of the Night (also known as Yoruno) is a major antagonist in the light novel and anime series Is this a Zombie?. He was a deceased young man who was resurrected as a zombie by Eucliwood Hellscythe, but eventually got tired of living forever and wished for Eu to end his life. He is also the one who convinced Kyoko to kill people in exchange for granting her extra lives, ultimately making him the main antagonist of season 1.

He is voiced by Koji Yusa in the Japanese version of the anime and Eric Vale in the English version, the latter of whom also voices Solf J. Kimblee.


He has pale gray hair and yellow eyes. When meeting with Eucliwood, he wears a red t-shirt with black slacks. In his final appearance, he wears a fur coat with a gray t-shirt and pants.


Although initially being delighted with his immortality, Yoruno eventually grew to view it as a fate worse than death, turning him into a cold and bitter man. He wished for Eu to end his eternal life and was willing to go to extreme lengths in order to convince her, despite knowing that she had killed a lot of friends in her past and didn't wish to kill anymore.

Despite his cold attitude, Yoruno had a great fondness for penguins, going so far as to ask Eu to bring him back as one as his final wish.