Tanjuro Kamado was the name of Tanjiro Kamado's father. He passed away before the event of the main story of the Demon Slayer. It is not mentioned how long Tanjuro had passed before the story, but in several flashback scenes, we can see him interacting with a younger Tanjiro.
Overall Abilities: Despite not being a Demon Slayer and having a tragic disease that makes his body incredibly frail, Tanjuro was shown to be a phenomenally strong individual. He was able to slay a bear nearly nine feet tall with a single axe at speeds magnitudes faster than the blink of an eye.
Despite not being a key character in Demon Slayer, Tanjuro had an important part in Tanjiro's life. Tanjuro was proven to be a remarkably powerful person, despite not being a demon slayer and having a sad sickness that renders his body terribly feeble.
So the only reason Muzan is afraid of Tanjiro is because of the Hanafuda earrings he possesses, which acted as a reminder of his downfall. nxt. Hanafuda Earrings are a symbol of Sun Breathing users, traditionally passed down from generation to generation as a family heirloom.
It turns out that Muzan attacked the Kamado family and specifically turned Nezuko into a demon in an attempt to create a demon that would be able to withstand being in the sunlight.
Muzan Kibutsuji has done some terrible things in Demon Slayer, but his slaughter of Tanjiro's family is one of the most mysterious.
Tanjiro's connection to Yoriichi is not through blood relation, but through their similar appearances, which is due to the divine nature of Sun Breathing. (Also Read: Did Demon Slayer hire a Bollywood director for Season 3? Fans speculate!)
Before he is able to regenerate fully, Tamayo appears and uses her Blood Demon Art to keep him in place, while using a drug that can turn him into human. Using this opportunity, Gyomei Himejima appears and destroys Muzan's head. However he is able to instantly regrow his head.
No, they are not related.
Since he didn't know anything about the Blue Spider Lily medicine, he needed others to find the plant for him by happenstance. This is the general reason why Muzan turned Nezuko into a demon. More specifically though, was the fact that Nezuko was of Kamado blood.
During one of his visits, Yoriichi performed all of his Sun Breathing techniques in succession in front of Sumiyoshi and his family. Sumiyoshi was so captivated by the movements that he decided to pass it down to his descendants as a way to keep Yoriichi's legacy alive.
Conclusion: Kokushibo, the upper moon rank 1 demon and Yoriichi are not Tanjiros' father and neither are Tanjiro's relatives. However, Kokushibo and Yoriichi are siblings and respect each other a lot despite Kokushibo hating the entirety of his brothers' being.
As it turned out, the scar on Tanjiro's forehead did have some significance to it, rather than simply being a Todoroki-esque burn from scalding water. Tanjiro wasn't born with this scar on his forehead. Rather, he acquired it when tackling his younger brother out of the way of a falling pot of boiling tea.
Gon is far stronger than Tanjiro, and it wouldn't be a stretch to say that Gon would defeat the demon slayer with ease. Tanjiro may be a master of water and flame breathing, but Gon's nen and raw physical powers truly pack a punch.
Tanjiro's most notable attribute is his ability to empathize with anyone, even demons, which often made him hesitate before delivering the final blow.
Tanjiro certainly did a lot of good with his Water Breathing techniques, but his ability to use Sun Breathing both gives him an edge in battle and allows him to stand out among the incredibly powerful Hashira he fights alongside.
Tanjiro is considered to be Muzan's main nemesis throughout the series. After murdering the Kamado family, he was personally sought out by Tanjiro in Asakusa, Tokyo when the Demon Slayer recognized his scent from the scene of the murder.
In the Demon Slayer Corps, the Hashira is a group of the strongest and most reputable swordsmen who have defeated members of the Twelve Kizuki. Yet, for some reason, Tanjiro Kamado, the series' protagonist, never becomes a Hashira.
Nezuko is at least stronger than Daki, meaning that if Muzan could bring her back under his control, she would certainly qualify for the most prestigious title a demon can hold: a member of the Twelve Kizuki. Thanks to Nezuko's remarkable strength, she would have to be an Upper-Moon.
Ever since he was in his mother's womb, Muzan was extremely frail and weak. The menace of death constantly haunted him: his heart stopped more than a few times when he was a developing fetus, and he was declared a stillborn upon birth due to having no pulse or breath.
The demon slayers successfully defeated Muzan.
Sanemi managed to survive the battle against Muzan, if just barely. Unconscious and straddling the edge of death, Sanemi chose not to go to Heaven with his siblings, but to lovingly join his mother in Hell because she'd killed most of her children after she became a demon.
Demon Slayer's season 3's latest episode has left fans on edge with Tanjiro's discovery of Yoriichi Tsugikuni's Type Zero sword.
Tanjiro and his father look extremely similar to each other. Fans think that Tanjiro was related to the legendary swordsman since he had the same earrings, and their appearances are similar as well. However, Tanjiro is not a descendant of Yoriichi Tsukiguni.
Tanjuro stated that he learned how to access the Transparent World from the father in the form of perception training, and was able to use it proficiently against a giant bear, chopping the animal twice in the blink of an eye before it could even attack.