; : :Satsuki moves to the hometown of her deceased mother with her father and her little brother Keiichiro, where she finds that her mother confronted several evil entities that haunted the town, which included Amanojaku, and wrote all her supernatural experiences in a diary, which is entitled "The Ghost Journal". Satsuki is very strong, brave and determined within, but sometimes a bit moody, mostly because of Hajime's reckless behavior. ; : :Momoko is a sixth-grader and Satsuki's best friend. She seems to fear nothing, even in dangerous situations, and is very brave when it comes to helping Satsuki and the gang confront the ghosts. She also has a psychic connection with Satsuki's mother. In the ADV English dub, she is a
born again Evangelical Christian from a posh family, and almost every sentence she utters contains a thinly-veiled reference to Christianity. She mentions that she was a heavy drug user and a sex addict prior to becoming a Christian. ; : :Hajime is Satsuki's neighbor. He is strong and courageous but has cowardly tendencies. Despite this, he is one of the most reliable of Satsuki's friends. In the ADV English dub, Hajime is a stereotypical anime protagonist with a slightly horny streak. ; : :Leo is Hajime's friend and has a big obsession with paranormal themes, and proclaims himself as a respected paranormal researcher. However, whenever Leo finds a clue pertaining to the existence of supernatural entities, it seems that it turns against him. Like Hajime, he tries to be brave, but most of the time shows cowardice. In the ADV English dub, he is portrayed as a dorky teenager from a
Jewish family. ; : :Keiichiro is Satsuki's younger brother. He is easily frightened, fooled, manipulated, and often cries, but on rare occasions shows courage in defeating the ghosts. Because of his weaknesses, he often creates situations that the other characters have to solve. He creates a special friendship with the ghost Amanojaku. In the ADV English dub, his incompetence is elevated to that of being mentally challenged. He is often referred to as having dyslexia and is seen applying to the
Special Olympics. He will often respond with a
non sequitur and in times of stress, his speech will turn into a childish babble. He behaves oddly and randomly bursts into laughter, tears, or squeals. ; : :Amanojaku is a powerful entity that, long ago, was sealed by Satsuki's mother in a tree in the mountains, but was finally released from his magic prison when that tree was cut down during urbanization. However, he did not have his freedom long, as Satsuki accidentally sealed him in the body of her pet cat, Kaya. At first, Amanojaku is hostile toward the kids and takes great pleasure in seeing them in trouble, but throughout the series, he develops an attachment to them (especially Satsuki and Keiichiro) and starts helping them in giving clues and sometimes gives direct help to the kids, displaying a personality. In the ADV English dub, he retains his antagonism towards the kids and will often break the fourth wall complaining about the poor animation, lazy writing or not being paid enough. ; : :Mr. Sakata is the teacher of the class where Satsuki, Hajime, and Leo attend. Despite not believing in ghosts, he suffers as a victim of many supernatural incidents. Mr. Sakata is often possessed, cursed, and kidnapped by ghosts. A running gag in the ADV English dub has him exclaiming his hatred for an unseen teacher named Ms. Hadley. ; : :Reiichirou is Satsuki's father. He has no clue about his daughter's supernatural duties and does not believe in ghosts. In the ADV English dub, he is a largely absent and inattentive father. It is implied that he is a cross-dresser. ; : :Kayako is Satsuki's and Keiichiro's deceased mother. Through her diary, it is revealed that she was an avid exorcist during her childhood. She possesses Momoko two times throughout the series to aid Satsuki against the Piano Ghost and Kutabe, and once helped Satsuki and the others to escape from a powerful haunting called Anamnaneki. Her maiden name was Kamiyama. It was revealed that she is haunting The Ghost Journal that she made for Satsuki (this was proven when The Ghost Journal content disappeared after Satsuki exorcised all ghosts that she dealt with during her childhood) and assisting her through the diary or possessing Momoko. In the ADV English dub, she is either
bisexual or
lesbian. ==Media==