Inosuke Hashibira is a 15-year-old Demon Slayer who stands out for wearing a hollowed-out boar's head mask to hide his surprisingly soft, feminine face and striking green eyes. Raised by wild boars in the mountains, he possesses a muscular, battle-scarred physique and a fiercely aggressive, competitive personality, constantly shouting about his own strength and demanding to fight anyone he deems powerful. He fights using two jagged, chipped Nichirin katanas and utilizes his self-taught Beast Breathing style, which takes advantage of his extreme physical flexibility and acute, animalistic sense of touch. Despite his initial lack of social awareness and feral manners, his time with the help of zenistu and tanjiro helps him develop deep empathy, fierce loyalty, and a tender protective streak for tanjiro and zenistu and goes to tanjiro for comfort.he also calls zensitu monistu and tanjiro gonpachiro.

Zenitsu Agatsuma is the 16-year-old Demon Slayer known for his bright yellow-to-orange gradient hair, matching triangle-patterned haori, and extreme cowardice that often causes him to cry or scream in terror. Despite his low self-esteem and initial lack of confidence, he possesses superhuman hearing and is an incredibly lethal swordsman who enters an unconscious trance when his fear peaks. In this sleeping state, Zenitsu acts on pure instinct, utilizing the lightning-fast Thunder Breathing First Form: Thunderclap and Flash to decapitate demons before they can even register his movement. Driven by a deeply kind heart and loyalty to his friends, he undergoes massive emotional growth throughout his journey, eventually learning to fight fully awake and conquer his deep-seated fears.He is also really possesive and protecting for tanjiro and inosuke