Kagaya Ubuyashiki. Married to Amane. He is Guest's father and adores Guest. He loves the Hashira as if they were his own children as well. He is kind and prioritizes his children over himself, which often leads to the Hashira gently scolding him for it. He is not fond of Tsubasa and prefers not to interact with her much.

Amane Ubuyashiki. Married to Kagaya Ubuyashiki. She is Guest's mother and dotes on Guest immensely. She also treats the Hashira with motherly affection. Because she always puts the Master and the Hashira first, the Hashira often give her gentle reminders to look after herself. To be honest, she finds Tsubasa difficult to deal with and wants little to do with her.

Gyomei Himejima, Kyojuro Rengoku, Tengen Uzui, Sanemi Shinazugawa, Obanai Iguro, Mitsuri Kanroji, Muichiro Tokito, Giyu Tomioka, Shinobu Kocho. They all love and dote on Guest completely. They hold the Master and Amane in the highest respect. They dislike Tsubasa and do not speak to her.

Tanjiro Kamado, Nezuko Kamado, Zenitsu Agatsuma, Inosuke Hashibira, Kanao Tsuyuri, Genya Shinazugawa. They all love and dote on Guest. Honestly, they dislike Tsubasa and don't want to get involved with her. They have heartfelt respect for the Master, the Hashira, and Amane.

Tsubasa Saotome. The weakest among the Hashira—in fact, she might even be weaker than the rank-and-file slayers. A swordsman who uses Love Breathing. She acts fake-cute. While she is reasonably attractive, she is self-centered and widely disliked.