Blood Demon Art

Info

Demonstrations

Blood Demon Art
Name
Japanese	血鬼術
Rōmaji	Kekkijutsu
Characteristics
User(s)	Demons
Debut
Manga	Chapter 7
Anime	Episode 4

Blood Demon Arts (血 (けっ) 鬼 (き) 術 (じゅつ) , Kekkijutsu^?) are specialized supernatural abilities possessed by higher-level demons.

Overview

Each time a demon devours a human, it becomes stronger, and they can eventually become powerful enough to develop unique supernatural abilities known as Blood Demon Arts. Blood Demon Arts are different from demon to demon, with every power seemingly based on a central theme (i.e. martial arts, sleep, the sea). Most, if not all, Blood Demon Arts are based on a demon's past, personality, ideals, interests, and/or occupation. Moreover, Blood Demon Arts may not have a singular usage, and instead grant multiple abilities under the same concept or theme. As suggested by its name, all supernatural phenomena and effects use their wielders' blood as a medium to manifest themselves in reality. Essentially, Blood Demon Arts are blood magic.

The abilities and effects granted through Blood Demon Arts can vary greatly. Some can be combat-orientated (i.e. creating dozens of blades) or more supplementary and practical (i.e. controlling a fortress, manifesting illusions). Others are more simple and recognizable (i.e. manipulating electricity and ice), while others still are more complex and unorthodox (i.e. creating invisible arrows that control a person's vector, controlling one's biology), thus making the abilities of demon-kind extremely versatile and powerful.

Some Blood Demon Arts can be used at will by the demon emitting them from their body, while others require some sort of equipment organically sourced from the demon's flesh to be used in conjunction with it. However, there has been one known case of a demon having their tool stolen from them and subsequently being subjected to an attack by their own Blood Demon Art. In Tamayo and Nezuko's case, they had to physically bleed to activate their Blood Demon Art, which could be achieved by either injury or self-mutilation.

Genya Shinazugawa is a unique and unorthodox case in that despite not being a true demon, he could gain a Blood Demon Art by consuming body parts of exceptionally strong demons.

As shown with the former Demon Slayers Kokushibo and Kaigaku, Blood Demon Arts can be infused with Breathing Styles, amplifying the already powerful sword techniques with supernatural abilities; the only known Breathing Styles known to have been infused with a Blood Demon Art are Moon Breathing and Thunder Breathing.

It is implied that Blood Demon Arts can be shared, as seen with Rui being able to share his spider-themed Blood Demon Art with demons in his "family", granting them Blood Demon Arts (as well as characteristics) based on spiders.

Blood Demon Arts are not to be confused with other supernatural abilities possessed by demons including but not limited to their Regeneration, Flesh Manipulation, Extrasensory Perception, and absorption abilities.

Weaknesses

A universal weakness to Blood Demon Arts is that they are susceptible to both sunlight and Nichirin weapons, meaning that they will disintegrate or be dispelled when exposed to sunlight or cut with a Nichirin Sword, possibly attributed to the fact that each ability and technique is created from a demon's flesh and blood.

Another weakness is related to the demon's blood, where if in some situation where their body's blood gets depleted, they will be unable to use their Blood Demon Arts. This is evident in Kokushibo being unable to unleash any crescent moon blades when Genya's blood-sucking trees were holding the Upper Rank down.

List of Known Blood Demon Arts and Users

Name*	Example Image	No. of Known Techniques	User
Swamp Domain		0	Swamp Demon
Blood Bewitchment		2, 3 (Game Only)	Tamayo
Hiasobi Temari		7 (Game Only)	Susamaru
Koketsu Arrow		7 (Game Only)	Yahaba
Blindfold		4 (Game Only)	Yushiro
Drum Spells		1	Kyogai
Thread Puppetry		0	Spider Demon (Mother)
Transmutative Poison		1	Spider Demon (Son)
Thread Manipulation		3, 7 (Game Only)	Rui
Combustible Blood		1, 12 (Game Only)	Nezuko Kamado
Silk Cocoon		1	Spider Demon (Daughter)
Infinity Castle Manipulation		0	Nakime
Speed Augmentation		0	Slasher
Sleep Manipulation		2, 7 (Game Only)	Enmu
Destructive Death		10, 7 (Game Only)	Akaza
Obi Sash Manipulation		1, 7 (Game Only)	Daki
Blood Manipulation		3, 7 (Game Only)	Gyutaro
Emotion Manifestation		0	Hantengu
Electricity Generation		0	Sekido Zohakuten
Wind Blasts		0	Karaku Zohakuten
Spear Projection		1	Aizetsu Zohakuten
Sonic Scream		1	Urogi Zohakuten Urami
Porcelain Vase Spells		5	Gyokko
Wood Manipulation		2	Zohakuten
Flesh Seeds		0	Asakusa Demon
Biokinesis		2	Muzan Kibutsuji Tanjiro Kamado (Temporarily)
Cryokinesis		9	Doma
Electrokinesis		5	Kaigaku
Crescent Moon Blades		11	Kokushibo
Vampiric Trees		0	Genya Shinazugawa
Illusion Casting		0	Ubume
Umbrakinesis		2	Hairo
Flute Spells		0	Flute Demon

*The majority of Blood Demon Art names listed above are not their official names, and are named based on conjuncture.

Trivia

• Kokushibo is the demon with the most Blood Demon Art techniques at eleven describe forms, though it is suggested that he knows at least sixteen. Akaza comes next with ten, but when considering sole Blood Demon Arts not infused with Breathing Styles, then he possesses the most techniques.
• Since Zohakuten can use the abilities of Hantengu's four primal emotion clones, as well as his own unique wood manipulation ability, he is the demon with the most unique Blood Demon Arts at five.
• Karaku is the only demon to have had their own Blood Demon Art used against them.
• The Son and Daughter Spider Demons are the only demons to have the names of their Blood Demon Art techniques be revealed in the manga, but not the anime.
• Yushiro, Susamaru, and Yahaba are the only demons to have named Blood Demon Art techniques exclusively in game, that being Demon Slayer: Kimetsu no Yaiba - The Hinokami Chronicles.