Kanao Tsuyuri/Relationships

Tanjiro Kamado
Due to Tanjiro's optimism and desire for her to open her heart, Kanao starts showing more emotion and decisiveness. After their initial interaction, she even begins to speak in complete phrases and sentences; at least towards those close to her. It is implied in an extra chapter that she may also have a crush on Tanjiro.

Kanae Kocho
Kanae took an interest in Kanao when she saw her being led away as a slave on the bridge. Along with her sister Shinobu, they purchased Kanao from her master and trained her within the Butterfly Estate. Kanae defended Kanao when Shinobu worried about her indecisiveness and said that if given time, Kanao's heart could blossom. She was the person who gave Kanao the coin she uses to make decisions whenever she is unable to decide things for herself. After Kanae's death, Kanao found herself unable to cry at the funeral, but wears one of Kanae's hairpins as a memento of her. She remembers Kanae's advice in times of trouble, and thinks highly of her. She expresses deep remorse at the fact that she could not cry during Kanae's funeral.

Shinobu Kocho
Shinobu was the one who snatched Kanao away from the slave driver and, along with Kanae, rescued Kanao from her captive lifestyle. Despite being the one to impulsively buy her, she quickly became frustrated when Kanao could not make her own decisions, declaring that she was dangerous to herself and others. Over time however, Shinobu warmed up to her, eventually even making Kanao her Tsuguko. She is very happy when Kanao expresses her wish to train beside her, and the two have a strong sisterly relationship. Before the decisive battle in the Dimensional Infinity Fortress, Shinobu entrusted Kanao with avenging Kanae's death while she used herself as a sacrifice. Even though their revenge goes as planned, Kanao is nonetheless filled with hatred and spite towards Doma. After she and Inosuke kill Doma for good, she fishes through the water to find Shinobu's hairpin as a keepsake of her departed sister. Kanao cries for the first time in the wake of Shinobu's death.

Doma
Much like Shinobu, Kanao holds a strong resentment and hatred towards the Upper Moon for killing Kanae. This grudge grows even deeper after Doma devours Shinobu following their duel, even if it was part of their plan for revenge. Kanao takes immense pleasure and satisfaction at calling Doma out on his inner "emptiness" and non-existent emotions, taunting him by asking him why he was even born and why he continued to bother living if he couldn't feel anything like a normal person would. She eventually kills him with the help of Inosuke and Shinobu's poison.

Inosuke Hashibira
Kanao interacts minimally with Inosuke throughout training. However, the two end up forming an unlikely duo in the battle against Doma, each fueled by a desire for revenge. They make for an effective team against Doma, aided as well by Shinobu's poison, and are able to decapitate the Second Upper Moon despite neither human combatant even being a Pillar. After the battle, Kanao and Inosuke do not seem to share any dialogue, but quietly grieve their respective and shared losses.