Dark Metro: The Ultimate Edition manga

Terror awaits the people of Tokyo, with gruesome lessons only the dead can teach. Anna almost descends to the dark side when she follows the suicidal Rei down an escalator to hell. Seiya pulls her back, but will they make it out of Tokyo's secret metro lines in time to escape Rei and the ghosts who inhabit the Tokyo underground? A waitress at a maid cafe sparks jealousy. A mother who can't handle the responsibility of raising her child commits a horrible crime. An ancient sword awakens a psychotic samurai. And finally, the solemn guide Seiya reveals his own tragic past and the nature of his gifts that are his curse.