Nightmare Detective 2 (2008)

Still haunted by his unwanted abilities, which allow him to enter other people's dreams, and memories of his mother dying when he was a child, Kyoichi Kagenuma (Ryuhei Matsuda) contemplates suicide while slowly drowning in his world of misery. Yukie Mashiro (Yui Miura), having heard rumors about Kagenuma's extraordinary abilities, visits his home to beg for his help. She tells him she suffers from nightly nightmares that are getting scarier. The murderous ghost in the dreams has already killed two of her friends. She's afraid she's the next to die and believes only Kagenuma can save her. Kagenuma ignores her pleas for help, but Yukie, refusing to give up, returns every day to change his mind. Kagenuma finally decides to take on Yukie's case to understand the circumstances of his mother's death. It, however, demands from Kagenuma more than he expected to give while it leads him into the darkest corners of dream scape.