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Koakuma (小悪魔, literally "Little Devil") is an unnamed devil residing within the Scarlet Devil Mansion. She first appears as the Stage 4 midboss in Embodiment of Scarlet Devil.
| Koakuma | |||||||
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| Origin | |||||||
| Origin | Touhou Koumakyou ~ the Embodiment of Scarlet Devil | ||||||
| Creator | ZUN | ||||||
| First Appearance | Touhou 06: Embodiment of the Scarlet Devil | ||||||
| Voiced by | Fan Series Actors: Nozomi Kasuqa, Kanna Amasawa, Minori Ozawa, Nichika Omori, Machico, Sachika Misawa, Natsumi Murakami, Saya Aizawa, Yae Sakura, Saya Hitomi, Yuri Komagata, Ayaka Ohnishi | ||||||
| Characteristics | |||||||
| Species | Devil | ||||||
| Gender | Female | ||||||
| Pronouns | She/Her | ||||||
| Sexuality | Unknown | ||||||
| Age | Unknown | ||||||
| Birthday | Unknown | ||||||
| Height | Unknown | ||||||
| Weight | Unknown | ||||||
| Ethnicity | Unknown | ||||||
| Status | Alive | ||||||
| Alignment | Lawful Neutral | ||||||
| Archetype | Familiar | ||||||
| Occupation | Library Assistant | ||||||
| Time Period | Non-linear | ||||||
| Language | Japanese | ||||||
| Combat Style | Magical Combat | ||||||
| Homeworld | Gensokyo | ||||||
| Relationships | |||||||
| Affiliations | Scarlet Devil Mansion: (Remilia Scarlet, Flandre Scarlet, Patchouli Knowledge, Sakuya Izayoi, Hong Meiling, Fairy Maids), Reimu Hakurei, Marisa Kirisame | ||||||
| Enemies | Reimu Hakurei (Formerly), Marisa Kirisame (Formerly) | ||||||
| This dropdown contains the synopsis of Koakuma’s story. Read at your own risk as you may be spoiled otherwise! | ||||||||||||
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Origin Embodiment of Scarlet Devil
Reimu or Marisa first passes through a dimly lit library, where Koakuma ambushes her. Koakuma is quickly defeated in the encounter. Foul Detective Satori Whispered Oracle of Hakurei Shrine |
Koakuma was not given an official name upon the release of Embodiment of Scarlet Devil, and ZUN confirmed early on that she lacks one. The fanbase commonly refers to her as Koakuma (小悪魔), meaning "Little Devil" or "Imp". ZUN used this term in a fan response while again stating she remained unnamed, though he noted having rough sketches for a face sprite and plans to give her spell cards. Official works such as Strange Creators of Outer World Who's Who of Humans & Youkai in Gensokyo have since referred to her by this nickname while reiterating that her actual name is unknown.
General Description: Koakuma is a winged figure with red hair. Her design has been interpreted differently between her original sprite and later official works.
Embodiment of Scarlet Devil Sprite:
Later Official Works:
Special Features: Koakuma's hair length is ambiguous. ZUN has stated he does not remember whether her original sprite depicted long or short hair, and noted that the image coming to his mind when thinking of the character matches her common depiction in fan art[3].
As a library assistant in the mansion, this means she helps tend to it while Patchouli reads the books there.
Koakuma is simply a fellow employee of the Scarlet Devil Mansion, with no indicated relationship beyond that.
As it is Remilia's mansion, she is a fellow employee of it.
Name: Unknown (Noted by ZUN that neither Koakuma or Daiyousei have a name[4], with him noting that Koakuma is just what she's called for the sake of convenience[5])
Titles: Demon Working in a Dusty Library[6]
Origin: Touhou
Overall Series: Touhou Project
First Appearance: Touhou 06: Embodiment of the Scarlet Devil
Latest Appearance: Foul Detective Satori
Company: Team Shanghai Alice
Creator: ZUN
Actor: The following voice acted roles are all from fan-made series not apart of any canonical Touhou works.
Gender: Female
Sexuality: Unknown
Pronouns: She/Her
Handedness: Right-Handed
Age: Unknown
Birthday: Unknown
Time Period: The world of Gensokyo itself is in a non-linear time period
Timeline: Main Timeline
Homeworld: Gensokyo
Residence: Scarlet Devil Mansion[7]
Story Role: Stage 4 Midboss
Legacy: Unknown Legacy
Influence: No Influence
Language: Japanese
Ethnicity: Unknown
Religion: N/A
Classification: Devil, Demon
Species: Devil
State of Being: Regular
Physiology: Devil Physiology
In-Universe Creator: Likely Patchilou Knowledge (Noted by ZUN that Koakuma is something like Patchouli's familiar and is a being of magic similar to Patchouli[8])
Occupation: Library Assistant
Combat Style: Magical Combat
Affiliations: Scarlet Devil Mansion: (Remilia Scarlet, Flandre Scarlet, Patchouli Knowledge, Sakuya Izayoi, Hong Meiling, Fairy Maids), Reimu Hakurei, Marisa Kirisame
Enemies: Reimu Hakurei (Formerly), Marisa Kirisame (Formerly)
Height: Unknown
Weight: Unknown
Status: Alive
Alignment: Lawful Neutral (Noted by ZUN that the reason Koakuma attacked the intruders is because she saw them as a suspicious intruder in the mansion[5])
Threat Level: Street Threat
Archetype: Familiar
Grade: B (Koakuma is noted to be rather small in terms of strength when it comes to other devils[1])
Tier: At least 9-C, Far Higher with Spiritual Power
Cardinality: Finite
Dimensionality: 3-D
Attack Potency: At least Bone level (Koakuma is noted to be rather small in terms of strength when it comes to other devils[1], though she should still carry their immense strength which should make her at the very least be on the same level as other standard Youkai physically; Youkais can easily kill humans[9], with it being noted that if it came to open conflict between humans and youkai, they would probably wipe out the village in the blink of an eye[10]. Along with this, there's implication that Patchouli summoned her to take out the intruders[5]), Far Higher with Spiritual Power (Noted how even Yumemi Okazaki's scientific magic truly pales in comparison with the real thing[11], which Yumemi noted to not make light of the power of her science as she could blow up the planet at any moment[12]). Can ignore covnentional durability with Magic (Magic exists outside of the Grand Unified Theory[13], a theory with any model that merges electromagnetic, weak, and strong forces into a single force at high energies, unifying gravity with the electronuclear interaction, providing a more comprehensive theory of everything. Yumemi explains that on her world, all power can be explained by the Grand Unified Theory, however she posits an existence of a power not covered by the Theory: the power of magic[14]. Yumemi also explains that in the world of Gensokyo, magic unifies everything[15]. Magic is noted by Yumemi to have close ties with religion[16]. The second layer of reality is spirit and magic, while the first layer is where all things within the laws of physics presides, putting attacks with magic outside of the conventional laws of physics[17])
Durability: At least Bone level, Far Higher with Spiritual Power. Her existence as a non-human makes them difficult to kill (It's noted that one cannot defeat spirits or devilish powers without a weapon with an unnatural amount of spiritual power such as the Yin-Yang Orb[18])
Striking Strength: At least Bone Class
Lifting Strength: At least Superhuman
Travel Speed: Superhuman (Can keep up with other characters flight speeds, where they can reach across long distances due to being able to fly[19])
Attack Speed: Superhuman (Capable of tagging Reimu Hakurei with their attacks[20]). Magic Attacks lack a defined speed (Magic exists outside of the Grand Unified Theory[21], a theory with any model that merges electromagnetic, weak, and strong forces into a single force at high energies, unifying gravity with the electronuclear interaction, providing a more comprehensive theory of everything. Yumemi explains that on her world, all power can be explained by the Grand Unified Theory, however she posits an existence of a power not covered by the Theory: the power of magic[22]. Yumemi also explains that in the world of Gensokyo, magic unifies everything[23]. Magic is noted by Yumemi to have close ties with religion[24])
Reaction Speed: Superhuman
Stamina: Superhuman (Able to shoot out a multitude of attacks[25] and use a lot of magic without tiring[26])
Range: Standard Melee. At least Tens of Meters with Attacks (Can shoot out large energy spheres that cover the entire screen in all directions[27]. Can sporadically shoot out multiple missile-shaped bullets across the screen[28])
Intelligence: Genius Intelligence (Koakuma is capable of finding the needed book instantly[6])
At least Journeyman level (Koakuma is noted to be rather small in terms of strength when it comes to other devils[1])
Grandmaster level (Koakuma is capable of finding the needed book instantly[6])
Nothing notable
Koakuma shoots out dozens of large energy spheres while having glyphs that shoot out multiple missile-shaped projectiles.
Standard Tactics: Koakuma will fly around and shoot out magic.
Weaknesses
The Touhou Project franchise canoncity mainly falls under any media worked on by ZUN are official and canon to the overall lineup.
There are various aspects constantly debated about within the canon:
Media like PC-98, has been noted by ZUN to be ignored as one can ignore derivative works[87]. He has also said that anything prior to Embodiment of Scarlet Devil can for the most part be ignored and one can think of Embodiment of Scarlet Devil as the starting from a clean slate and starting a new series[88], he's also referred to Highly Responsive to Prayers as a study product[89]. With this in mind, one would assume that PC-98 is thus non-canon to the Windows continuity of games.
However, ZUN has also directly stated PC-98 games are the same world as the Windows Games, stating that any contradictions that exist from PC-98 can be ignored from the retcon in Windows Era[90]. While one argues ZUN noting the works are derivative works to be ignored and Embodiment of the Scarlet Devil should be seen as the starting point, these statements are moreso telling a fan to not worry about having to play PC-98 games or learn more about their stories.
It's also been noted in Embodiment of Scarlet Devil's おまけ.txt that the game chronologically is not too far from the previous title, which would be Mystic Square, the PC-98 title[91]. ZUN has also directly brought back characters from PC-98 games, noting he wanted to bring back characters from before Embodiment of Scarlet Devil and notes any of the other older characters that don't appear have probably retired by now and are warmly watching over things from various places nowadays[92]. When asked where Mima from PC-98 has gone, ZUN notes that he doesn't bring them back due to making things complicated and having potentially angry fans ask where she has been the entire time, he has also noted that there's not much use for characters like Genji as Reimu can fly now and also notes he is not dead[93]. ZUN has also made mention to Genji probably living in the lake in the back of the shrine[94]. In Touhou Sangetsusei ~ Strange and Bright Nature Deity, Reimu and Marisa were talking about glowing moss with Reimu saying it would be nice to transfer it to the pond in the back of the Hakurei Shrine and Marisa saying that she could make it grow there on the turtles' back, referencing Genji[95].
In Touhou 07 Perfect Cherry Blossom, when Alice meets Reimu, she tells her long time no see, noting that they've met before calling her "old friend"[96]. In Yuuka's mode in Touhou Project - Phantasmagoria of Flower View, Reimu directly references defeating Yuuka back in PC-98[97]. If Yuuka defeats Marisa in the same game, she will note that Marisa has grown up quite a bit, when the last time she's seen her has been in PC-98[98].
Seeing as ZUN himself has directly said both PC-98 and Windows are in the same world and that characters directly acknowledged PC-98 events and reference characters from it, PC-98 is completely canon and any contradictions PC-98 have can be ignored.
Touhou 7.5 - Immaterial and Missing Power takes place between Perfect Cherry Blossom and Imperishable Night[99].
In the series, there are multiple playable character routes, including some where the characters fight Reimu herself and defeat her, calling question into what route is canon. ZUN has elaborated that canonically, anytime Reimu and the gang are defeated, they challenge again however many times they want, but on the youkai side, they do not challenge again after being defeated and are not attached to the results of winning or losing[100].
In terms of how playable routes have went, some examples of canonically noted routes:
With some of these examples, it is normally assumed that in some way Reimu has some part in resolving every incident and other routes are dubiously canon depending on what transpired.
There are many cases of weaker humans beating stronger Yokai or vice versa within the Touhou series, this has been elaborated on in Reimu's profile on Perfect Memento in Strict Sense. Reimu introduced the spell card rules as the youkai had no way to defeat the Hakurei shrine maiden, making many youkai feel that their meaning to exist have dissapeared[70]. The rules incoporate the following:
The original draft held these rules[104]:
These rules allows for duels that feel almost like sport rather then a match, and have allowed for weaker fighters to challenge stronger ones, due to this though, it also has become possible for youkai to freely defeat Reimu without worrying about the consequences.
Due to them being written into cards and essentially affecting the ability and power of an attack, the spell cards are likely the thing binding attacks to specific properties.
Parallel Worlds is a topic brought up at some points in the Touhou Project franchise, they are worlds called "Probability Worlds" by Yumemi, stating that those and parallel worlds are one and the same[105]. This essentially means that parallel worlds in Touhou are based on the concept of probability. Yumemi and Chiyuri use a "Probability Space Hypervessel" in order to travel to alternate worlds and time periods[106], further showcasing that probabiliy serves an importance.
There[107] are[108] multiple[109] occasions[110] of[111]characters[112] commenting[113] on[114] humans like[115] Reimu[116] being strong[117]. Despite this Reimu showcases physical strength that isn't superhuman, such as the fact that she cannot cut a bamboo stick while Fujiwara direclty does in front of her.
This is due to the difference between magical and physical strength.
In works like Symposium of Post-mysticism, Yuugi Hoshiguma's profile has Suika directly state that Yuugi is weaker then her in magical powers, but stronger than her physically[118], lining a clear difference between magical and physical strength.
While one can be physically stronger then another, such as how Onis are physically the strongest, magic users are still able to keep up with them due to using a different form of attack.
An example can be found with Yuugi herself, when Reimu fights against her in Subterranean Animism[119], with her acknolwedging her strength[120], something Yuugi only does to those who are truly strong[118]. This establishes even with spellcard rules, Yuugi considers Reimu a strong fighter. Reimu herself is very clearly not at an oni's physical strength, as she cannot do the things they can, however, her magical strength allows her to keep up with them.
To defend against magical based properties requires Non-Standard Defenses as it is acknowledged as not being something of standard physicality.
In Chapter 27 of Curiosities of Lotus Asia, Reimu proceeds to explain how reality works to Rinnosuke and Marisa, where she explains in-depth the three layers of reality.
This conversation started from discussing the mechanism of fortune, where Rinnosuke attempted to posit that the future is predetermined and that Reimu's luck was her being able to calculate in an instant the predetermined future, however Reimu had a different explanation requiring her to lecture on the mechanisms of probability[121], in her explanation, the world is made up of three layers: the physical layer that moves in accuracy with the laws of physics, the second layer that moves with the spirit, and the third layer of memory which is the recollection of events that lies within all things[17]. The memory layer rejects the loop of the physical and mental layers, the two layers the youkai conceive of the world which is why they believe history repeats itself and the future is predetermined. Since it's only possible to add to the memory layer, it's possible to completely recreate the past.
While the physical layer follows the laws of physics, the mental layer interprets the outcomes and the memory layer alters the probability, essentially creating the future, since it's impossible for memories to raech the same state as a point in the past, the future is not predetermined, thus when Reimu is able to predict how the dice will fall, she's not predicting the fall of the dice, the dice members the fact that she predicted how the dice would fall, thus due to this, Reimu entering the memory of the die-face greatly skews the results in Reimu's favor, where the results side with Reimu[122].
Thus the memory layer is essentially the most important layer that rejects the notion of loops from the previous two layers.
近づいて、フカシとヨーコが手を振ると、西之園萌絵は、 両手を顔の横で広げてみせた。 人類は十進法を採用しました、というジェスチャではない。
(Coming closer, Fukashi and Yōko waved their hands, then Moe Nishinosono spread her hands next to her face. This wasn't the gesture of mankind adopting the decimal system.)
The author included this line to clarify that she did not spread her arms to form the shape of the character 十, but rather extended all ten fingers as if she had counted to ten.


Koakuma's cameo in Strange and Bright Nature Deity Chapter 14
Koakuma's fortune slip in Whispered Oracle of Hakurei Shrine
One example of this is believed to be in Touhou 02's Stage 3 Scarlet Dream ~ Scarlet Dream where it displays stars and a space-like effect in the background[123], however this is actually the World of Fantasies, the world that lies between Makai and the human world, with Genji confirming this is definetely not outerspace as Reimu can breathe just fine there[124].
This is an argument that spawns from how small the characters look in different works, though this is moreso due to the "moe" artstyle Touhou tries to capture, in many of the manga characters look far older.
Majority of characters in the series are outright shown to drink alcohol on a daily basis[125], where one needs to be at least 20 years old under Japanese law to drink, where Japanese law requires no underaged characters to be shown drinking. This is even acknowledged in the series itself with a note saying alcohol is only for those over 20 years old[126]. Thus if a character is ever seen drinking alcohol in the series, they are an adult.
The only direct non-adults in the series are Sumireko Usami, Chiyuri Kitashirakawa, and Hieda no Akyuu in her first appearance.
This statement comes from a fan translation that says this in Curiosities of Lotus Asia[127].
While the statement seems clear cut, there is another translation used instead that makes more sense with the sentence.
It instead notes that most youkai concieve of the world through these two layers, which is why they believe the future is pre-determined and history repeats itself[128]. This falls in line with the earlier disucssion of Rinnosuke claiming that he believes the future to be predetermined and Reimu needing to explain to him why that's not the case[121].
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