Spirit Migration

Spirit Migration (スピリット・マイグレーション) is a Japanese light novel series written by Hero Tennki with illustrated by Ishibashi, Yousuke and is based on the light novels of the same name. The light novel series was adapted into a manga series with illustrations by Akane, Kotetsu and serialized by AlphaPolis Web Manga, with 3 volumes released as of January 21, 2015."Genres: Action, Adventure, Fantasy"

Synopsis
"Possessed hero is a different world adventure!"The spirit of someone who lost his memory and was floating in a labyrinth of another world. Eventually, he realized that he could possess and act on creatures other than humans, and with curiosity, he took over the bodies of demons that wriggle in the labyrinth one after another, and stepped out of the labyrinth where the unknown world spreads. Everywhere you go, a young female swordsman, a beautiful girl daughter, and a natural beauty mercenary are involved, and a haunted hero begins a different world adventure! our protagonist begins his great adventure in this world!

(Source: MU)

Light Novel:
Hero, Tennki (Author) / Ishibashi, Yousuke (Illustrator), "Spirit Migration" AlphaPolis Web Manga , 6 volumes already published (as of July 31, 2016).
 * Released date June 30, 2016 - ISBN 978-4-434-21967-2
 * Released date May 06, 2014 - ISBN 978-4-434-19187-9
 * Released date September 09, 2014 - ISBN 978-4-434-19643-0
 * Released date March 07, 2015 - ISBN 978-4-434-20316-9
 * Released date August 08, 2015 - ISBN 978-4-434-20895-9
 * Released date July 31, 2016 - ISBN 978-4-434-22231-3

Manga:
Hero, Tennki (Author) / Ishibashi, Yousuke (Character draft) / Akane, Kotetsu (Illustrator), "Spirit Migration" AlphaPolis Web Manga, 3 volumes already published (as of July 31, 2017)
 * Released date November 30, 2015 - ISBN 978-4-434-21223-9
 * Released date September 30, 2016 - ISBN 978-4-434-22322-8
 * Released date July 31, 2017 - ISBN 978-4-434-23457-6

Character
The place where the souls of the dead gather. Samsara. Reincarnation. Just like 'that person' whose soul remained in this place together with the memories of his past life sinking deeper, waiting for their next life. There are times where souls that gained a new life are pulled up, but most of the memories the people have are the ones they had accumulated since the time they were conscious in this 'place'. A 'place' that seems to be filled with silence for all of eternity, 'that person' who was supposed to be added to it, is swaying heavily because of the strong feelings from his past life that were engraved into his soul. Together with a small amount of memories, a single soul, together with his spirit, but he was drawn by another world and fell down through the door of life. A spirit was floating in another world's dungeon, missing its memories. Eventually "he" learned to possess other creatures and using the bodies of the beasts in the dungeon, made his way to the outside world that it could communicate with the humans..

Trivia
 to be added 

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