A Shaman is someone who can connect with the world of spirits and gods, this allows him to do amazing things, like taking the skills and techniques of assimilating a spirit with him. They can ask for advice to the spirits, heal the sick and gather the ghosts of the dead in this world. Moreover, by contacting the dead, they can also speak with great historical figures.
Not everyone can communicate with spirits, so shamans have been revered since ancient times and there are still scattered all over the world. Shamans are located in China and Guinea tribes in Polynesia. In Japan, those who summon the spirits are called Itako and are located in the northeastern regions, in the Amami islands north of Okinawa.