Why does Zenitsu get Stronger when he sleeps?

In this article, I want to talk to you about one of my favorite characters from the Demon Slayer universe. This is Zenitsu Agatsuma.

Today we will find out how strong he really is, and talk about his sad story and the formation of his personality from a weak insecure boy to a determined and strong character and also I will try to answer the question why Zenitsu becomes stronger when he sleeps. Zenitsu has low self-esteem and when he senses difficulty or danger, he runs away, hides, or simply cries. But even being so, he respects his friends and is devoted to them. Remember only that moment when Zenitsu, at the cost of his life, protected Tanjiro’s box from Inosuke.

“Tanjiro.. I.. protected her.. because you.. said that.. this thing is more important to you than your own life..”
— Zenitsu Agatsuma to Tanjiro Kamado, Chapter 25

Because Tanjiro had previously said that this box was more important to him than his own life since Nezuko was there.

Personality

Zenitsu is cowardly and believes that due to his dangerous work as a demon hunter, he does not have long to live, which is why he often pesters the girls he meets, begging them to marry him. Zenitsu has low self-esteem, making it difficult for him to live up to other people’s expectations and his own – when he senses difficulty or danger, he runs away, hides, or simply cries. Often this causes him to lose faith in his abilities and, even when it’s obvious, Zenitsu denies that he won the victory with his powers. He thinks his calling is to live a humble life, not to kill demons.

Even though he is soft-spoken, Zenitsu respects his comrades and especially admires his late master Shihan. A sense of duty to him helps Zenitsu forget about fear and focus at the right moment.

History

When Zenitsu was younger, he was in love with a girl who tricked him into collecting money to run away with her lover. Due to the fact that the girl was deeply in debt, Zenitsu got into trouble, but he was saved by the former Thunder Pillar Jigoro Kuwajima. To repay his debt, Zenitsu had to go through hellish training and become a demon slayer.

Zenitsu was under Shihan’s tutelage and trained alongside his senior student, Kaigaku. At one of his training sessions, Zenitsu climbed a tree because he didn’t want to train anymore and was suddenly struck by lightning, causing his hair to turn white.

Sleep is his hallmark

Let’s now talk about how Zenitsu fights while sleeping. We know that its hallmark is auditory perception. This is how the human body perceives sounds – by detecting vibrations. When these vibrations occur, pressure is applied to small hair cells located in the inner ear. This is then transmitted to the brain, and the more pressure, the louder the sound. You probably thought why I am telling this, and so the fact is that the vestibular system is also located in the inner ear, this is a system that is used by the body for balance, when a person closes his eyes, the body cannot tell the brain what is happening, so the person begins to lose balance. It’s ironic that Zenitsu is the most balanced when sleeping, not only due to his sensitive hearing, but also his breathing style that resonates with his vestibular system. Speed ​​is one of Zenitsu’s most important traits. In terms of agility and speed, this is probably one of the fastest characters. It can probably be compared with sonic or flash. The zenith attack is so fast that no one sees what is happening. An example would be the moment when Zenitsu first killed a demon in front of our eyes, and that demon didn’t even realize what was going on until after his head was already cut off.