Nezuko Kamado, Tanjiro's sister, is also a main character. Despite being a demon, she retains some of her humanity and is very protective of her brother.
Zenitsu Agatsuma is another main character. He is a cowardly yet powerful demon slayer. His Thunder Breathing technique is quite impressive. Inosuke Hashibira is also among the main characters. He is wild and often uses his Beast Breathing technique in battles.
Kimetsu no Yaiba manga is highly popular. It has captured the hearts of many readers with its engaging storyline and well-developed characters. The beautiful art style also adds to its appeal.