Companion (manga)

Companion (ツレビト) is a manga series created by Yoshitomo Akihito serialized in the monthly Japanese Magazine Z, which is published by Kodansha.

Story
Companion is about the people who escort you from purgatory into the world of the dead. After you die you must go through your personal gate into the world of the dead, and companions are the ones who lead you there.

Chapter one of the manga follows the story of a schoolgirl named Mako as she comes to terms with her death.