Sankarea - Chihiro Furuya is a male high school 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, Bābu, 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 run away from home. In an attempt to commit suicide, she drinks a sample of the "resurrection" potion which is created from the poisonous Hydrangea macrophylla flower, although 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 becomes a zombie who eats hydrangea leaves to survive
here's the link- http://chia-anime.com/mstream.php?id=73288#
btw the manga of it is still ongoing.