Hitomi

Three people in Tokyo take a surreal voyage of self-discovery through memory and nightmares. "O" intends suicide while talking on a cell-phone with a stranger he meets on line who plans a simultaneous suicide. Events take a horrifying turn. (imdb)

In present times, Gods and Demons coexist together with Humans after the door between each of these worlds had opened. Tsuchimi Rin is a normal young high school student attending Verbena Academy, spending his days living peacefully with his childhood friend Kaede. Unexpectedly, one day the King of Gods, the King of Demons and their families move into be Rin's next door neighbors. (myanimelist.net)