
Origin
Italy
Marion originates from Napoli, Italy and was born on February 28, 1987, the daughter of a Mafia boss and had psychokinetic powers. When she was little, Marion's mother personally sewed her a small doll that was given one of Chuck's revolvers by her father. Marion recognized his spirit haunting the gun, and he promised to protect her. Her father was, however, eventually betrayed and was killed and her mother died in a horrible way when she tried to escape with Marion. She herself was chased by her father's enemies until she was saved by Asakura Hao who used his fire to kill them. After that, she swore him eternal loyalty. She is on the shaman Team "Hana-Gumi" with Kanna Bismarch and Matilda Matisse. After the tournament, Marion and her fellow team members are hired as waitresses at the Funbari Onsen.

Shaman King
A battle is about to begin in Tokyo: the Shaman Fight, a tournament held every five hundred years where shaman—those who can command spirits—confront each other in combat. The victor of this contest becomes the Shaman King and the only one who is able to contact and control the Great Spirit, allowing them to reshape the world as they please through its immense power. During a late night walk, Manta Oyamada runs into his classmate, the carefree You Asakura, who invites him to come stargazing with some friends, who, to Manta's horror, turn out to be ghosts from a local cemetery! However, the knowledge that Manta possesses—a rare sixth sense that allows Manta to see these spirits—endears the boy to You. So when You finds out that his new comrade has been beaten up by a local gang, he decides to avenge him with the help of Amidamaru, a samurai ghost whose tomb was broken by the gang leader. Soon Manta uncovers more about the world of spirits, including the Shaman Fight, in which his new friend You aims to claim victory.

Shaman King (2021)
Shamans are extraordinary individuals with the ability to communicate with ghosts, spirits, and gods, which are invisible to ordinary people. The Shaman Fight—a prestigious tournament pitting shamans from all over the world against each other—is held every five hundred years, where the winner is crowned Shaman King. This title allows the current incumbent to call upon the Great Spirit and shape the world as they see fit. Finding himself late for class one night, Manta Oyamada, an ordinary middle school student, decides to take a shortcut through the local cemetery. Noticing him, a lone boy sitting on a gravestone invites Manta to stargaze with "them." Realizing that "them" refers to the boy and his ghostly friends, Manta flees the terror. Later, the boy introduces himself as You Asakura, a Shaman-in-training, and demonstrates his powers by teaming up with the ghost of six-hundred-year-old samurai Amidamaru to save Manta from a group of thugs. You befriends Manta due to his ability to see spirits, and with the help of Amidamaru, they set out to accomplish You's goal of becoming the next Shaman King.