In Sankarea, Chihiro Furuya is a high school student whose fascination with the undead goes far beyond ordinary curiosity: he dreams of having a zombie girlfriend. When his beloved cat, Baabu, dies, Chihiro throws himself into finding a way to bring the animal back to life, and his search leads him to a resurrection potion and to Rea Sanka, a wealthy girl trapped in a stifling home life. As the two work together on his project, their bond deepens, and Rea gradually reveals the loneliness and frustration hidden behind her calm, well-mannered exterior. In a desperate bid to escape her troubles, Rea drinks the potion herself, and the consequences of that choice push her into a terrifying new existence after a tragic accident. From that point on, Sankarea follows Chihiro as he tries to understand how to care for Rea, protect her secret, and navigate the strange reality of loving someone whose undead condition makes every moment unpredictable. Blending romance, dark comedy, and supernatural unease, the series turns Chihiro's impossible wish into a complicated and emotionally charged relationship.