Sankarea: Undying Love (さんかれあ) is a manga written and illustrated by Mitsuru Hattori. It is published in Japan by Kodansha. The manga has been serialised in Bessatsu Shōnen Magazine since December 2009, with five complete volumes released as of 28 December 2011. An anime television adaptation by Studio Deen aired in Japan from April 5 to June 28, 2012. A novel adaptation by Ryō Suzukaze was published by Kodansha in July 2012.
The protagonist, Chihiro Furuya, is a male highschool student with a keen interest in zombies, collecting zombie-related videogames, film and manga, and even to the point of desiring to "kiss a zombie girl". Following the death of his pet cat, he attempts to revive it using an old manuscript, which describes the process of creating a potion for resurrection. At this time he encounters a girl named Rea Sanka, who has ran away from home. In an attempt to commit suicide, she drinks a sample of the "resurrection" potion which is created from a poisonous herb known as Hydrangea macrophylla, however this fails to kill her. Following an argument with her father, she falls from a cliff by accident and dies; however as a result of the potion, she returns as a zombie. Though she becomes undead, she chooses not to consume human flesh, and rather survives on eating the hydrangea herbs.