Summary

One of the most powerful abilities that demons in theDemon Slayerseries possess is known as Regeneration, the ability to heal injuries at supernatural speeds, making them extremely hard to defeat. Where slicing off the arm of a human would be a fatal blow, for demons, they would easily be able to regenerate the arm back.

This is thanks to the blood they receive from their Demon Lord - Muzan. Thanks to their regenerative abilities, demons have more of an advantage in battle against demon slayers. The more of Muzan’s blood a demon possesses, the faster their regeneration speed becomes.

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The Mechanism Of Demon Regeneration, Explained

The Infusion of Muzan’s Blood Is What Makes Demons So Strong

Upper Moon Demons are given more of Muzan’s blood because of their accomplishments, this means they can regenerate severed limbs twice as fast as the average demon. Upper Moon demons are also able to heal from severe injuries, making them almost undefeatable. This is seen during the battlebetween Akaza and Rengoku, as Akaza was able to regenerate his severed limbs at an extremely fast rate. Some demons are even able to hold on even if their head is severed by something other than a Nichirin Blade, making them harder to kill. As the creator of the demons, Muzan can also control a demon’s regenerative abilities to some extent, this means he can prevent a demon from regenerating and take away their abilities completely or even destroy them if they disobey him.

We cannot regenerate a limb once lost! Don’t run away! Rengoku is way more amazing than you! He’s stronger! - Tanjiro Kamado to Akaza

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Muzan possesses the ultimate regeneration capability of all demons, he is instantly able to heal from injuries and can also split himself into multiple pieces at will and put himself back together. Regeneration for demons is a means of immortality for some, as they are always able to regenerate if incapacitated. Demon regeneration also happens at a molecular level, this means that they are able to even regenerate damaged tissues and organs mid-battle.Just like how Hashiras woulduse their Breathing Techniques in the heat of the battle, demons can also use and speed up their regeneration abilities if they are faced with a near death situation to survive.

The Levels Of Regeneration And Its Weaknesses

Regeneration Also Comes With Its Weaknesses and Levels

The regeneration ability also comes with its limits, as Nichirin Blades which are used to decapitate, can nullify the effects of demon regeneration because they areimbued with the power of sunlight. When demons are exposed to sunlight, they are also unable to regenerate as the demon’s body begins to disintegrate faster than they can regenerate. Demon Slayer who are capable of special breathing techniques such as Sun Breathing can do more lasting damage to a demon’s regeneration ability and slow down the process of demon regeneration. The use of Wisteria poison can also be a tool used to kill demons and slow down their regenerative abilities. However, if the demon is an Upper Moon, it would take a higher dosage and longer time to kill powerful demons with just Wisteria poison.

Demon Regeneration has various levels and is categorized into - Enhanced Regeneration, Immense Regeneration and Nigh-Absolute Regeneration. Enhanced Regeneration is the basic level of regeneration ability that a lower end demon would possess, which means their regeneration ability is not quite as fast. Immense Regeneration is a step ahead when it comes toregeneration and is what the Upper Moon Demonspossess, as they are able to regenerate at quick speeds. Nigh-Absolute Regeneration is the highest regeneration ability a demon can possess and Muzan is also the only demon who possesses this ability. Muzan was so strong that a special drug needed to be created to make him age fast so that his regeneration abilities would weaken, making it difficult to regenerate his injuries when injured.

Demon Slayer

Demon Slayer

Based on Koyoharu Gotouge’s shonen manga, Demon Slayer: Kimetsu no Yaiba is an action anime set in Japan during the early 20th century. Seeking revenge for the murder of his family while also looking to save his sister, Tanjiro joins the Demon Slayer Corps as they try to eradicate Demons led by Muzan.