6-jikan Go ni Kimi wa Shinu

Keishi, a youth who proclaims himself a seer, suddenly says this to Mio, who is walking along the streets of Shibuya. At first, Mio scoffs at it as nonsense but ever since her acquaintance was murdered a few days ago, she realises that she has also become a victim of a stalker. Half believing it, she decides to hang around with Keishi. Later, with the help of Sawaki, a detective she knows, the stalker is identified. She thinks the case is closed but a totally unexpected person attacks her.
(Source: jdramas.wordpress.com)
~~ Adapted from the novel “6-jikan Go ni Kimi wa Shinu” (6時間後に君は死ぬ) by Takano Kazuaki (高野和明).