Mitsuri Kanroji/Relationships

Obanai Iguro
Obanai is deeply in love with Mitsuri, as he has stated in the manga. He feels as if he can't tell her, though, because of his "filthy blood:" the belief that he is a tainted individual unworthy of love caused by the trauma he had endured in the past. He first saw her when she stood under a sakura tree, which is where he fell in love with her. To show his affection, he gets her gifts, such as food, or even the green socks that she wears with her standard uniform. Even though she is the Love Hashira, she is unaware of his infatuation, causing his love to be unrequited. They also frequently exchange letters with each other.

He is very observant of Mitsuri, as he is immediately able to tell when Mitsuri is feeling down, as well as what food and how much food she normally eats. ￼

During the Infinity Castle Arc, she and Obanai fought Upper Rank 4, Nakime, showing impressive teamwork, even though could not beat her before Muzan Kibutsuji kills her himself.

When fighting against Muzan with the other Hashira and Demon Slayers, Mitsuri is heavily injured. Obanai instantly rushes to her side, taking her away from the battle to get help. As he leaves her with the other Demon Slayers to go back to the battle, she is seen screaming his name, begging him to come back alive. ￼

After the battle with Muzan, Obanai is seen cradling Mitsuri's body, both of them aware that they were dying. The two reminisce about the first time they met at Ubayashiki's mansion, and he admits Mitsuri saved him by making him feel normal. When she worries that she was useless in the end, he says he won't let anyone say anything bad about her. Mitsuri confesses that she loves him, that she always enjoyed sharing meals with him, and that he always looked at her so gently. Mitsuri asks him to take her as his wife, if they are reborn as humans, and he agrees, promising to make her happy and protect her. This vow eventually happens as their reincarnations marry each other.

Tanjiro Kamado
During their first meeting, Mitsuri thinks to herself about how Tanjiro continues to protect his sister, despite how Nezuko was turned into a Demon, calling it beautiful sibling love. In the beginning of the Swordsmith Village Arc, Mitsuri is seen running down the hill from the hot springs, complaining about a boy who was mean and who ignored her when she asked for his name. Tanjiro comforts her by telling her that supper will be ready soon, and she stops crying and rushes down towards the village.

Nezuko Kamado
Mitsuri likes Nezuko, as she is seen playing with her during the Swordsmith Village Arc.

Kyojuro Rengoku
Kyojuro Rengoku was Mitsuri's mentor as she derived her own unique Breathing Style, the Love Breathing from his Flame Breathing. She has extreme gratitude for Kyojuro as well. ￼

Shinobu Kocho
Shinobu and Mitsuri get along well as they are the only two females Hashiras of the Demon Slayer Corps after Kanae's death. Mitsuri looks up to Shinobu and trusts her enough to tell her about her worries.