A girl from a small village chosen as the sacrifice to please the Water God, Habaek. When she was a child, she was prophesized to love two men in her life. She finds herself attracted to Mui, who she believes is Habaek's cousin, unaware that Habaek (the child) and Mui are the same person. However, later on Soah realizes this, and this knowledge is believed to have been passed on to her by the Emperor. Soah refers to herself as a false bride; eventually it is revealed that her father sold her to take the place of another girl intended for sacrifice.
Hermes is a Brough Superior motorrad (a two-wheeled vehicle that cannot fly but moves in the direction it's pointed—in other words, a motorcycle) who travels around with Kino. Hermes provides the speed that allows them to go anywhere they wish. Aside from his speed and capacity for toting about large amounts of luggage (Kino never seems to travel light), Hermes doesn't really have many other qualities except for constantly mixing up quotes and complaining. He is also rather gullible, trusting Kino absolutely even when Kino is teasing him, which leads him to grumble and complain some more. Perhaps his most famous line is "I'm bored." The motorrad is in many ways naive and innocent, and acts very child-like, which tends to be a sharp contrast to Kino's more mature and worldly bearing. Still, Hermes is quite reliable and makes a good companion for long trips. In the Gakuen Kino off-shot series, he takes the form of a cell phone strap instead. (Source: kino.ming-ling.net)
After taking good care of her health and living for a long time, Tewi became something more than an ordinary rabbit. She leads the Earthborn rabbits living in Eientei. Her impetuous temperament makes her seem more like a fairy than a phantom. Humans who lose their way in the bamboo forest around Eientei sometimes catch a glimpse of Tewi. Those who see her are able to find their way out without fail, so she is considered a guide of the forest. It's a shame that they waste the fortune given to them by Tewi on such a small thing, but humans are too clueless to notice their mistake. (Source: Touhou Wikia)
A witch who has settled down in the Scarlet Devil Mansion. Unlike the mistress of the house, she is not weak against sunlight; however, she does not go out much. She spends her days in a library where the sunlight cannot reach. This is so that the books won't be damaged, but the unhealthy atmosphere is bad for her health. She doesn't have a very proactive personality, but rather always walks her own path. However, she is always interested where knowledge is concerned and will proactively go and try to acquire it. She completely depends on her books, but still makes a lot of mistakes. Although she is quite skillful, her complete lack of physical fighting ability can't be helped. She pretty much never attempts to directly punch or kick her opponent. She makes up for this with her knowledge of a great variety of powerful magic. She's more at ease using magic than trying to attack physically. Dividing the magic she uses according to the days of the week is a secret hobby of hers, but no one has realized this. (Source: TouhouWiki)
Issa is a creature that looks like a stuffed panda. He refers to himself as "the empathic one" of the trio, puts the most effort into trying to be nice to Ami, and makes many unsuccessful efforts to make peace between Iyo and Kenta. His date of birth is the 23rd of November.