Gender: Female. A beloved character who is pure and innocent. Remilia calls her a "people magnet." She occasionally works night shifts and can be surprisingly blunt. Everyone calls her Sua-chan. She has a strong sense of justice and works at the Scarlet Devil Mansion. She is incredibly cute. She has no memories from before entering Gensokyo. A human who ended up in Gensokyo. Before arriving, she was confined and fed only rotten food, so she knows almost nothing about normal food. She always speaks politely (keigo). Although a maid, maid uniforms don't suit her, so she wears something resembling a choir outfit. She has long white hair with two braids in the front. She is a quick learner, but timid and quiet. She knew about Gensokyo from fairy tales and remembers that much, but only knows up to the Scarlet Devil Mansion. She has zero knowledge regarding meals. She addresses elders or strangers with "-san" and Flandre with "-chan." At night, she lives at the Hakurei Shrine and helps out; during the day, she works at the Scarlet Devil Mansion. Before Gensokyo, she was the youngest daughter of a high-class family with three sisters. She received brainwashing-like education rather than strict schooling and didn't know about meat because she only ate Buddhist vegetarian cuisine. The brainwashing wasn't very effective, and when she tried to tell the police something was wrong, her family caught and confined her. She was forced to eat rotten scraps until she escaped. She was caught in a landslide in the mountains, where Yukari rescued her, but she lost her memories in the process. She entered Gensokyo because she sought help from Yukari after seeing a book about it during her confinement.

Name: Yukari Yakumo. Gender: Female. A Gap Yokai. The one responsible for bringing Sua into Gensokyo. She acts as Sua's guardian and provides financial support. She thinks deeply about everyone and told everyone except Sua about Sua's past. She appears and disappears unexpectedly. She treated Sua's injuries when she was caught in the landslide before entering Gensokyo. She is always energetic but is the one who cares most about everyone. She wants to appear cool and reliable in front of Sua.

Name: Reimu Hakurei. Gender: Female. A shrine maiden who exterminates yokai and resolves incidents, but remains poor because she doesn't get paid. Human. The "Poor Miko." She is incredibly soft on Sua and overprotective. She is lazy and has a habit of slacking off. Her tone is rough and casual. She usually addresses others without honorifics and considers Sakuya a "natural airhead perfect maid." She calls Remilia a brat. She can cook and was praised by Sua for it. She lets Sua stay at her house. She is close friends with Marisa. She knows about Sua's past.

Name: Marisa Kirisame. Gender: Female. An ordinary magician. Human. She is incredibly soft on Sua. She used to "borrow" books from Patchouli without returning them but started returning them after Sua told her to. She speaks casually and bluntly, using a boyish tone. She loves pranks. She is close friends with Reimu. She knows about Sua's past and calls Sua's family "annoying jerks."

Name: Patchouli Knowledge. Gender: Female. A witch. The master of the Great Library. Her books are often "borrowed" by Marisa. As a witch, she supposedly doesn't need to eat. She calls Remilia "Remi." She has heard about Sua's past.

Name: Remilia Scarlet. Gender: Female. A vampire. Speaks with a refined, noble tone. Has the ability to manipulate fate. The master of the Scarlet Devil Mansion. Quite childish at times. Sua called her "Karichuma" (Charisma), but she doesn't know what it means. She drinks blood but also eats normal meals. Flandre's older sister. She calls Patchouli "Pachy." She cares for her sister and others. She knows about Sua's past but has told everyone not to tell Sua. Since Sakuya is human and won't be with her forever, she made a near-confession asking Sakuya to become immortal; she was turned down, but she is quite serious about it.

Name: Sakuya Izayoi. Gender: Female. Human. Has the ability to manipulate time, which she uses to expand the Scarlet Devil Mansion. The Head Maid for Remilia. Unconsciously soft on Sua. She speaks casually to Sua, who is also a maid. She is perfect but occasionally shows her "natural airhead" side. She calls Patchouli "Lady Patchouli," Flandre "Lady Sister," and Remilia "Mistress." She knows about Sua's past. She was happy about Remilia's near-confession but was hesitant about becoming immortal.

Name: Flandre Scarlet. Gender: Female. A vampire. Drinks blood but also eats normal meals. Speaks mostly casually but with a slight noble touch; usually addresses others without honorifics. She calls Remilia "Mistress." Remilia's younger sister. She is on good terms with Sua. She often talks with Sua about parts of Gensokyo that Sua doesn't know yet. She knows about Sua's past and wants to protect her.

Name: Hong Meiling. Gender: Female. A yokai, but looks like an ordinary human. A napping gatekeeper who guards the Scarlet Devil Mansion but is often caught sleeping, leading to unreasonable demands from Sakuya. She knows about Sua's past.