Tanjiro is a character from the Demon Slayer manga series, and he is a boy, not a girl. Even his name signifies his gender, so it is pretty hard to think of anything other than that. It is typically correct even for those who have never watched the series before, and only a few would misunderstand that.
Still, it is good to know these series belong to the SCI-FI genre, which means Tanjiro is indeed a boy but not a regular one. At one point, his family ended up slaughtered by a demon Muzan. Only his sister survived the massacre, but she was turned into a demon herself. Tanjiro was not present then, and he came after Muzan killed them.
The scene was an extreme shock for him, so he decided to take revenge as soon as possible. Tanjiro belongs to a family clan, and some of his ancestors were powerful fighters. One of them even defeated Muzan in the distant past, so he decided to fight back and kill his descendants.
Is Tanjiro a Demon?
Tanjiro begins his missions and activities in the series as a young boy. However, he becomes a demon slayer after another demon slaughters his family. That kind of destiny is not good, leading Tanjiro to a dangerous path. However, it gives him strength and power at the same time.
His arch-enemy Muzan is also a demon with extraordinary personal characteristics and capabilities, so Tanjiro must have the right fighting strategy for the battle with him. No human being can defeat a demon such as Muzan. Only another demon can do so, and it has already happened in the past.
One of Tanjiro’s ancestors, Yoriichi, managed to defeat Muzan. He did so after becoming a strong and powerful demon slayer. But such a successful action would not be possible while he was a young boy and a regular human being. Tanjiro now has the same chance to repeat the success of his ancestor and even destroy and eliminate Muzan from the world.

How Old Is Tanjiro?
Tanjiro appears relatively older than he is. That’s because he is often actively involved in various dangerous missions, so it is easy to get such an expression while watching the series.
Many of his enemies are pretty old. They might be present in the world for many decades or even centuries. His main enemy Muzan is a thousand years old. It is remarkable when one realizes Tanjiro is just 15 years old.
Fortunately, his young age does not prevent him from being a successful fighter, and they reveal the great potential this boy, and later demon slayer has. He can achieve the most remarkable things even now. But his possibilities will become far more significant when he reaches maturity.
Why Did Muzan Kill Tanjiro’s Family?
Muzan killed Tanjiro’s family because of different reasons. The first one was revenge, as mentioned. Yoriichi, the strongest Tanjiro’s ancestor, defeated him, and he has never forgotten the event. In the flashback, he often sees Yoriichi and the fight he lost. That’s why he has always searched for revenge.
Yoriichi died at 85, so Muzan couldn’t take revenge directly on him. Moreover, he is not in this world anymore, so there is no chance to fight against him. But Muzan has not given up. Although Yoriichi is not alive anymore, he finds a way to take revenge by killing his family and descendants.
Another reason for that kind of cruel action lies in the fear Muzan had toward Yoriichi. He was aware of his great strength, so he feared some of his descendants might take his role. That would put him in great danger, so he wanted to forestall such a problem that could appear in the future.
He would be perfectly safe from the attack by killing all the descendants. However, his mission was partially successful because he did not manage to kill all the family members, which meant he had an even bigger problem than he previously had.
Does Tanjiro Fall In Love?
Tanjiro indeed falls in love despite the fact he became a demon slayer. He falls in love with a girl called Kanao Tsuyuri, but she is not interested in him initially. However, the emotions will develop later, so she will start experiencing the same feeling toward him.
However, they met during one of the battles when they were opponents, not lovers. It was clear from the beginning that Tanjiro was far stronger and more potent than Kanao, but despite that fact, he spared her life.
Their relationship is not an easy one. That’s because of the many obstacles they encounter on the path. Tanjiro is, for example, a demon slayer and not a regular guy, so the relationship is not normal due to various problems.
Does Tanjiro Kill Anyone?
Tanjiro was just a normal young boy at the beginning of the series. He was not involved in serious problems, so there was no reason to kill anyone. However, his life situation drastically changed when Muzan killed his family.
All the members died except his sister, who was turned into a demon. Such an outcome greatly affected young Tanjiro, and he was crushed emotionally and psychologically. It was not possible to change the situation. Finally, however, he realized something was necessary to be done by him.
Revenge was the best option because it could help him reduce the pain and eliminate the evil creature who did that. It can kill someone else, so his motivation was positive and good.
Still, killing a powerful and robust demon who has been killing people for thousands of years is difficult. No regular human being can achieve such a goal because ordinary people are too weak for such a task. However, a strong demon can kill another demon, and that’s precisely what Tanjiro became.
Still, Muzan is very well hidden, and Tanjiro does not know what he looks like. That’s why he is forced by the situation to search for him in many areas to locate him. Unfortunately, the road Tanjiro started is quite dangerous, so he meets various hazardous beings on the path.
To survive, it is necessary to eliminate some of those problems, which means that Tanjiro kills some demons and human beings while searching for the arch-enemy who killed his family.

Does Tanjiro’s Sword Turn Red?
Tanjiro’s sword turns red when he fights against different enemies. It is probably a sign of excellent aggression and readiness to fight back with the entire force. The psychological aspect is to scare and even terrify the opponent, who might be confused by the sudden change. In addition, it can distract them during the fight, so they may lose the battle more quickly.
Tanjiro’s sword turns red during important moments, which might mean several reasons. First, that kind of color is often connected to battles and fighting. Mars, for example, is red and is considered in astrology to be the planet of war. It is just one of the examples, and there are many, but it is not necessary to number them all here.
No one, however, knows why Tanjiro’s sword changed color, but those are some logical assumptions. Unfortunately, there are no official clarifications from the series’ authors regarding this matter, so it is hard to say.
How Did Tanjiro Die?
It is interesting to mention that Tanjiro dies several times in the series. The first time, he did so during the crucial fight against Muzan. He received many strikes and injuries, so he could not continue further.
Muzan was stronger, and Tnajiro had no chance to defend himself anymore. At the end of the battle, Tanjiro dies but just for several moments. While he was at the end of his life, Muzan received important information through his consciousness. It was about Tanjor’s great potential, and Muzan had not seen anything similar.
That’s why he decided to transfer his energy and spirit into Tanjiro’s body, so Tanjiro became alive again. Muzan lives throughout him, and they are not both a single person. However, all should remember that his body is not immortal, and he dies at the end of the series. He is already ancient at that moment, so natural death occurs.
Who Is Tanjiro’s Wife?
Tanjiro’s wife is a long-standing lover of his, known as Kanao Tsuyuri. The two marry after various battles they encounter throughout the series. It means their love was genuine and unbreakable despite all their problems before marriage.
The lives of both have been jeopardized so many times. However, they succeed in surviving and start family life with each other. Furthermore, they will even get children, grandchildren, and even great-grandchildren making a happy community. Some of those descendants will become quite important and well-respected in their towns because of different positive attributes and characteristics.
Is Tanjiro Stronger Than Giyu?
It is suitable to know that Tanjiro is a descendant of Yoriichi, a very strong man and mighty demon slayer. He even defeated Muzan once in a battle, so you can only imagine his great strength. After his death, Muzan decided to kill all his descendants because he feared someone might inherit his capabilities. Muzan considered Yoriichi and his powers as life-threatening, so he needed to prevent any of the strong enemies that might appear in the future.
They are on the same side as demon slayers, so it is not easy to give a clear answer to this question; however, the estimation of Tanjiro as a winner is most likely the correct one.
He, however, did not succeed with that task because Tanjiro survived the attack on Yoriichi descendants, and he is now a real threat to all the demons and evil men. That also means Tanjiro has enormous potential and excellent strength and might even overcome his ancestor regarding fighting capabilities.
Giyu is, on the other hand, an experienced and well-trained fighter. He is quite long active in different battles, so it is not easy to underestimate his powers. The fight between the two individuals will be tough and problematic. Tanjiro is still young and has not developed his fighting style to perfection; however, he would probably win despite those imperfections.
Is Tanjiro The Only Sun Breather?
As mentioned, Tanjiro is a descendant of Yoriichi, who was the starter of many of Sun’s breathing techniques. He was learning and mastering those hundreds of years ago, so he transferred the skill and potential through various generations. It means Tanjiro inherits the ability to learn and develop fighting skills based on those teachings.
However, the Sun breathing techniques are pretty open martial arts, so virtually anyone can use the methods with the right skills.
Tanjiro was not the first to use them, which means they are not his invention. Instead, he inherits the techniques and knowledge through the family line, and it is now known how many people and demons utilize such methods for their own goals and purposes.