Oiwa is the main character. After being treated terribly by her husband, she becomes a ghost. Her story is centered around her misfortunes and her subsequent revenge as a spirit.
Well, the oiwa ghost story is about a woman named Oiwa. She was poisoned by her unfaithful husband. As a result, her appearance became grotesque. Her spirit then returns from the dead to seek revenge. She is a symbol of the wronged female in Japanese folklore, and her story is often used to warn people about the consequences of betrayal and cruelty.
Since I don't know the actual story, it's hard to say. But likely, the main character is the 'guest' mentioned in the title. This guest could be anyone, perhaps a traveler, a curious explorer, or just someone who accidentally ends up in a spooky place.
Often, it's a student who stumbles upon the mystery. For example, a curious new student who isn't afraid to explore the school's hidden corners.
The main character is Bradshaw, as it's a story named after him.
Since I don't know the exact 'the wanderer ghost story', it could be the wanderer itself, the ghost that is the focus of the story.
I don't know for sure. It could be the ghost itself.
Since we don't have much detail, it might be the one who first discovers the presence of the watcher. This could be someone who moves into a new place, like an old house, and starts to notice odd things that lead them to suspect there's a ghostly watcher. They would then be the main character as they try to figure out what's going on with this watcher.
Since I don't know the exact 'gray ghost story', I can't say for sure who the main character is. It could be the gray ghost itself.
The main character is probably Satsuki. Since the story is named after her, she's most likely the central figure. She could be a young girl or a woman. Maybe she has some special ability that makes her more sensitive to the presence of ghosts, or she could just be an ordinary person who gets caught up in a spooky situation.
I don't know who the main character in 'the moth ghost story' is. It could be a person who is haunted by the moth - related ghost, like a young girl who discovers the mystery of the moth ghost in her old family house.