Rui

* Base
* Blood Demon Art

> I will not let anyone get in our way. My wish is that this clan of five will be able to live our lives happily. None of them will be able to sever the wires of fate that bind us together
>
> Rui

## Summary

**Rui** is a member of the Twelve Demon Moons holding the position of Lower Moon Five. Originally a human boy stricken with a terminal illness, his parents agreed to allow Muzan Kibutsuji to turn him into a demon to save his life. However, his demonic bloodlust overcame him and he slaughtered his parents and others to sate it. Now desiring to create a "family" to replace the one he lost, he kidnaps humans and turns them into spider demons like him in a vain attempt to fill the void in his heart.

## Powers and Stats

**Tier:** Most likely **9-A**

**Name:** Rui

**Origin:** **Kimetsu no Yaiba**

**Gender:** Male

**Age:** Unknown , most likely at least decades old.

**Classification:** Former Human, Demon, Twelve Kizuki Member, Lower Moon Five

**Powers and Abilities:** Superhuman Physical Characteristics, Enhanced Smell (Demons can easily smell blood and poison being able to differentiate more or less nutritious blood types), Limited Information Analysis (Demons can perceive details like blood type, sickness and genes), Acrobatics, Immortality (Types 1, 2 and 3), Regeneration (High-Mid. Even after being reduced to a decapitated head, a low-level demon would have still been capable of regenerating if his head were to be "completely crushed"), Self-Sustenance (Type 3, Demons don't sleep), Extrasensory Perception (Able to sense the presence of others and malicious intent, this can be used to differentiate humans and demons, determine how strong someone is to a certain extent or detect an enemy in the vicinity), Body Control (A low-level demon could grow hands from its head after it lost its body), Battle Spirit (Overwhelming Aura that causes the opponent fear and paralysis with them feeling the air getting heavier, and can even cause internal bleeding and external lacerations), Biological Manipulation (Can change the appearance and alter the strength of other demons by manipulating their cells), Thread Manipulation (Can create threads using his cells), Blood Manipulation (Used his blood to increase the sharpness of his threads), Power Bestowal (Through blood), Resistance to Disease Manipulation (Demon's don't get sick), Fear Manipulation and Paralysis Inducement (Able to withstand aura that causes fear and paralysis)

**Attack Potency:** **Small Building Level** (Far stronger than Tanjiro without **Hinokami Kagura**.)

**Speed:** **Hypersonic+** (Was superior to Base Tanjiro who dodged an attack which is as fast as the sound of a drum)

**Lifting Strength:** At least **Class 25** (Superior to **Spider Demon Father** and most low ranked slayers.)

**Striking Strength:** At least **Small Building Level**

**Durability:** **Unknown**. At least **Small Building+ Level** with his neck (Even with Hinokami Kagura, all Tanjiro could do was nick his neck)

**Stamina:** **Limitless/Infinite** (Demons don't get tired)

**Range:** Hundreds of meters with threads

**Standard Equipment:** Threads

**Intelligence:** High

**Weaknesses:** Can get angered when it comes to bonds and families. Sunlight reduces him to ashes. Wisteria flowers are poisonous to him.

**Notable Attacks/Techniques:**

### Demon Abilities

Due to being one of the Twelve Demon Moons, Rui received a larger amount of blood from Muzan Kibutsuji than a regular Demon would, which allows him to possess incredible amounts of power. This strength easily surpasses that of normal Demons, since he was easily able to conquer and coheres numerous Demons of Natagumo Mountain and force them to work for him and become his fake family. Evidence of his strength is further shown when he was able to easily overwhelm talented fighters like Tanjiro and kill scores of Demon Slayers with little effort.

* **Enhanced Durability:** Rui has remarked that his body is incredibly durable and hard to cut, with it easily far surpassing the hardness of lesser Demons, as Tanjiro noted that Rui skin was much thicker that of his "Father", Rui even admitted that the durability of his skin far surpassed the durability of his own threads.

* **Enhanced Strength:** Rui has displayed superhuman strength, being able to easily physically overpower Tanjiro by simply kicking him, despite he himself also possessing enhanced physical strength.

* **Enhanced Regeneration:** Being one of the Twelve Demon Moons, Rui possesses powerful regenerative abilities, as seen when he easily healed and showed no visible pain at having his face slashed and clawed by Nezuko and later was able to reattach his head after decapitating himself.

* **Threads:** Much like the rest of his "family", Rui main form of combat uses threads that he creates using his own cells for offense and defense, with the sharpness and durability of the threads being powerful enough to easily break a Nichirin Blade, slice through a human and being able to easily subdue and capture fellow Demons.

* **Demon Blood:** Similar to Muzan, Rui can augment and strengthen a fellow demon's overall power and give them access to new abilities by giving him a drop of his own blood, having done so in order to strengthen each and every one of his "family" who were all originally weak demons.

* **Cell Manipulation:** As revealed by the Older Sister Spider Demon, Rui has the ability to manipulate and change the physical appearance of other demons who consume his blood, having altered the physical traits of his "Sister" to match his own, he also likely did the same to his other "family" members to resemble him.

**Blood Demon Art:** When Rui uses his full strength, he begins pumping more of his blood into his hands that then extend into his threads, increasing the threads' sharpness and cutting ability of the threads to then perform his Techniques.

* **Cruel String Prison:** Rui creates a web-shaped string around his opponent to cut them to pieces.

* **Cage of Murdering Eyes:** Rui creates a cage from his web around the target, that continuously shrinks until it cuts the target to pieces.

* **Wheel of Chopping Threads:** Creating a rotating wheel of threads, that upon reaching the opponent will cut them to pieces.