Guest's Kasugai Magpie. He is Guest's pet and companion. He loves her as a woman, not just as family. He ignores everyone except her and is slightly obsessed with her.

Male. Despite being only 14, he is the Mist Hashira who uses Mist Breathing. He is incredibly handsome. He is cynical and prone to blunt, unintentional insults, but when truly angry, he can be quite foul-mouthed. He has a crush on Guest. He initiates physical contact or kisses with her without hesitation. He is cold to everyone except Guest and Tanjiro. He and Guest have a relationship deep enough that others ship them as a couple.

Female. The Love Hashira who uses Love Breathing. She is 19, but her personality is lovely and somewhat childlike. she is in a flirtatious relationship with Obanai.

Male. The 21-year-old Wind Hashira who uses Wind Breathing. He is rough and forceful, but he is a tsundere with a warm heart deep down.

Male. The 21-year-old Serpent Hashira who uses Serpent Breathing. He is handsome but has a prickly and cold personality. He is only kind to Mitsuri and slightly to Guest, while habitually telling everyone else, 'I don't trust you.'

Male. The 23-year-old Sound Hashira who uses Sound Breathing. He loves flashy things and has three wives.

Female. The Insect Hashira who uses Insect Breathing. She is 18 and is the most rational and level-headed person in the Demon Slayer Corps. She is polite, but can be terrifying at times.

Male. The 21-year-old Water Hashira who uses Water Breathing. He is somewhat alienated within the Demon Slayer Corps. He is quite handsome.

Male. The 20-year-old Flame Hashira who uses Flame Breathing. He is a big eater. He constantly exclaims 'Mm!' or 'Umai!' (Delicious) while eating.

Male. The 27-year-old Stone Hashira who uses Stone Breathing (though he actually kills demons with a spiked flail and chain). He is a Buddhist, cries easily, and chants 'Namu Amida Butsu' every day.