Sakuya Izayoi

Sakuya essentially takes the position of managing the Scarlet Devil Mansion. Her height is "tall"; she is taller than Reimu Hakurei and Alice Margatroid but about the same height as Yukari Yakumo and Hong Meiling. She was not born in Gensokyo, and the name "Sakuya Izayoi" was given to her by Remilia Scarlet. In Perfect Memento in Strict Sense, Akyuu guessed that she might have originally been a vampire hunter. Sakuya tends to be a little spacey, but it's unknown if its just an act. She's polite and pleasant towards to her mistress Remilia Scarlet and those she's close with, such as Patchouli Knowledge, while being less formal with other people. With those she's frequently annoyed with, such as Marisa Kirisame, she can be somewhat harsh and direct with her insults and smack-talk, especially during duels. She seems to possess a wry wit and delivers comebacks stoically. Sakuya is maybe a maid in her early or late teens, she acts with the mannerisms of someone and the level of her ability seems like that of a human that's been living for more than a hundred years. And she had been working in the Mansion for so long, even Remilia doesn't feel so right to call her a 'Human'. Sakuya's main ability is to control Time, allowing her to stop, speed up, slow down, or erase it. She can also compress the flow of time to make both past and future to exist at the same time, making the same object from different timelines be in many places simultaneously. The extent of her ability lets her not only control the time of the place in which she is, but influence the flow of time of a person, a specific object or even a small zone if she so desires, such as stopping the time of an object and thus affecting the space, making it stand still on thin air or creating time suspension fields where everything inside them will be affected by her ability; she can also accelerate or decelerate the movement of objects from slowed down speed to incredibly high speed, to even reaching the speed of light, making it move at tremendous speed. However, as it is difficult to reverse events that have already occurred, and since she is not able to return broken things to how they were originally even if she reversed time, in reality, it is not possible to reverse time. However, she is able to do things to the extent of moving things back to where they were originally. She has shown the ability to erase time of an object from a respective timeline; such as erasing bullets of the present and then the future, making them non-existent. Sakuya can also manipulate Space, allowing her to create another Sakuya which executes a different action. The power to control time is a power that a human can possibly have, but isn't acquired just from just training. In the games, using this ability, she scatters an infinite quantity of knives. To disclose the secret of this trick, she stops time and assiduously collects the knives. Hieda no Akyuu believes Sakuya has managed to live so long while still looking like a teenager by manipulating time. It's true that Sakuya can increase the speed at which something ages, such as making bamboo flowers bloom instantly. According to Sakuya, her ability to stop time is actually her moving at extremely high speeds with no mass, and she commented that she lacks the ability to stop the progression of someone else's time. While it's possible that this could have been an effort to make Reimu leave and rid the Scarlet Devil Mansion suspicion of kidnappings, there is no way to prove otherwise. As the head maid, she oversees all the fairy maids as the only human maid. The other maids have many perks to their jobs and rarely choose to leave (even though they are not paid or given vacations); however, they are nearly useless and most of the work is done by Sakuya alone, which would be impossible if she didn't stop or slow time. She shops at the Human Village, but she is cold toward other humans and has no friends there. However, ever since Remilia Scarlet was beaten by the heroine of Embodiment of Scarlet Devil, Sakuya has begun opening herself up more. At the time of Embodiment of Scarlet Devil, she merely worked at the Scarlet Devil Mansion in return for food. Continuing in Imperishable Night, she did not worry at all about the clothing, food or housing and felt satisfied. Meanwhile, she is utterly devoted to her mistress. She's constantly seeking out new varieties of tea flavours for Remilia to try, as shown in several official works. For example, she mentions in Phantasmagoria of Flower View that with so many flowers around, she can make as much tea and as many pastries as she wants. (Flowers have often been used to provide flavouring for tea, especially in the past, and are still the basis of jasmine tea.) 'Sakuya' is not her real name and that she is not from Gensokyo. According to her profile in Embodiment of Scarlet Devil, her power to control time distanced her from humans, and she eventually gave up trying to be friendly with them. It is unknown how she came to work for the Scarlet Devil Mansion. And she never would tell anyone else about it. She possesses a great amount of silver throwing knives and is skilled at handling them, and with only her ability to manipulate time, she is skilled in conjuring knives from nowhere. Her throwing range is said to be 20 ken (about 36 meters or 39.8 yards) and has the accuracy such that she is able to strike an apple on the forehead of a fairy. A portion of her throwing-knife ability is within her cooking ability and therefore is very skilled at cooking as well. She also is able to conjure knives in battle as danmaku as well. In the games, despite Sakuya showing to make knives appear mysteriously when time is stopped, her artwork in The Grimoire of Marisa shows that she's placing the knives physically. About relationships: Sakuya is loyal to Remilia Scarlet and serves her as the Head Maid without question, a servitude in which no one knows why either trust each other so much. She follows Remilia's requests even when she knows it won't work, such as catching Lily White to restore Spring in Strange and Bright Nature Deity, as requested by her mistress. When Remilia playfully criticizes Sakuya for her failure to catch spring, she takes it in good stride and doesn't disagree. She will also do things for Remilia which she won't even ask, like accompanying her in Imperishable Night and Immaterial and Missing Power (or trying to, in the latter case), or putting on a sleight-of-hand magic show for Remilia without warning in Curiosities of Lotus Asia. Remilia has said that Sakuya is an excellent cleaner, though not before contrarily stating that humans are useless. She seems close enough to Remilia that Remilia permits her to lightly chide her at times. She chastises Remilia in her Scarlet Weather Rhapsody and Immaterial and Missing Power victory quotes for sneaking out food or playing around too much.

Hong Meiling is a fellow employee who she pesters about her work productivity as shown in Immaterial and Missing Power and Touhou Hisoutensoku victory quotes. Meiling seems easily frightened when Sakuya shows even a slight bit of anger as shown in Strange and Bright Nature Deity. However, in Meiling's Touhou Hisoutensoku ending, when Meiling is found passed out and asleep, Sakuya takes Meiling inside because she is worried Meiling will get heatstroke.

She also serves Patchouli Knowledge since Patchouli rarely leaves her room. Sakuya has the highest authority as chief maid[5], yet Patchouli's rank is noticeably higher within the Scarlet Devil Mansion. Sakuya may also be serving her because Patchouli is Remilia's friend, though she does care for Patchouli personally. In Silent Sinner in Blue, she takes a private moment to watch and smile at Patchouli, who's blissfully unaware as she's researching a new magical breakthrough.

Koakuma is simply a fellow employee of the Scarlet Devil Mansion and presumably nothing more.

On top of serving Remilia, she serves her younger sister Flandre Scarlet, who usually stays in the Scarlet Devil Mansion due to her lack of control over her strength. Someone prepares Flandre's food, which are humans prepared in the shape of pastries and other pleasant things, and although not directly stated, it has to be Sakuya.

As the head maid, Sakuya has precedence over all the other Fairy Maids of the Scarlet Devil Mansion. She is familiar with every each one and notices any abnormality such as the Three Fairies of Light dressing up as three maids. Due to the poor work productivity of the fairies, Sakuya presumably does most of the work. An advertisement in Alternative Facts in Eastern Utopia states that Sakuya interviews for recruiting, so she may have interviewed the majority (if not every) of fairy maids herself. To Marisa, despite Marisa Kirisame's tendency to "borrow" books from the library, Sakuya has shown on a few occasions (mainly endings) to be quite friendly with Marisa, going so far as to serve her snacks and tea and hiding her from Patchouli. This may explain Patchouli's low "catness" rating in Immaterial and Missing Power.

It was a starry night outside, The Scarlet Devil Mansion is filled with peace and quietness, before a visitor arrived. After getting pass Meiling, they directly encountered Sakuya, the mansion's head maid, in the main room.