Another April series getting some background details released is that of Sankarea, the zombie romantice comedy that's based on the manga series by Mitsuru Hattori. The main cast for the series has been announced today with:

Chihiro Furuya: Ryouhei Kimura (Kodoka Hasegawa from Haganai, Shouma Takakura from Mawaru-Penguindrum)
Rea Sanka: Maaya Uchida (Mari from YuruYuri, Izumi Yunomoto from Moretsu Pirates)
Mero Furuya: Yuka Iguchi (Tsukihi Araragi from Bake/Nisemonogatari, Maho Misawa from Ro-Kyu-Bu!)
Ranko Saōji: Sayuri Yahagi (Kaya Miyoshi from Bakuman, Izumi Segawa from Hayate the Combat Butler)

Plot concept: This is the story of Furuya, a 15 year old boy who is obsessed with zombies. From videos to manga, trinkets to video games, he will stop at nothing in his quest for anything zombie related. However, his interests turns from a simple hobby into an obsession when his cat dies in an accident. Using an old manuscript, Furuya embarks on a quest to revive his fallen pet. During his quest however, he is discovered by the idol Rea, a popular and elegant lady from a wealthy family. Though it may appear that her life is perfect, everything is not as it seems. And she turns to Furuya, for a chance to live her life, in this life or the next.