The Beautiful Neighbor: Season 1 (2011)

A sudden encounter between a gracefully attractive but mysterious woman, Saki (Nakama Yukie), and an ordinary housewife, Eriko (Dan Rei), who has a happy family, causes Eriko's serene daily life to fall apart. Eriko's husband, Shinji (Watabe Atsuro) becomes the target of Saki's advances and finds himself caught between her and his wife.