Description:

Yumeko is a girl obsessed with the occult, but her best friend Satoru is a skeptic. But then, Satoru dies and comes back as a ghost that only Yumeko can see. (Source: MU)

Description:

Tsurebito 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.(Source: MU)

Description:

A group of childhood friends drifts apart after one of them, Meiko "Menma" Honma, dies in an accident. Years later, the leader of the group, Jinta Yadomi, has become withdrawn and lives as a recluse. An older Meiko appears to him, and says that she must have a wish granted, though she does not know what it is. (Source: Wikipedia)

Description:

After the body dies, the soul lives on. Many spirits progress toward the world of light, through the levels of the spirit world where they study how to improve their souls. These spirits are sometimes reincarnated into the physical world, and sometimes they are sent back as guardian spirits for other living people. Guardian spirits must protect their charges souls from the blackness that oozes up from the world of darkness below. Riyon is a very laid-back spirit, who often skips her spirit classes to fool around. To train her further, she is sent back to the physical world as a guardian spirit. Instead of following a human from birth, she is helping a beleaguered man, the Japanese Prime Minister Kasuga Soichiro, in the last year and a half of his life. After an unexpected close call with death, Kasuga gains some unusual talents, including the ability to see Riyon. Will Riyon and Kasuga together be able to protect his battered soul? (Source: MangaHelpers)

Description:

11-year old Niina is special. This is because she has the memories of her past life as a girl named Chitose still intact. Among these memories is a promise with Chitose's boyfriend which Niina then decides to try and fulfill. But can she really? (Source: Shoujo-Crusade) Volume 1 contains the one-shot Koi Baka.