Gyutaro/Relationships

Daki
Despite being hundreds of years old and losing all of his human memories, Gyutaro has a strong attachment to his younger sister, Daki.

Because their mother was abusive, Gyutaro spent most of his time as a human raising her by himself.

However, despite his love for her, he isn't above insulting her, calling her a weakling and telling her that, had it not been for him, she would've died a long time ago. In his final moments, Gyutaro viewed his way of raising her as his only regret. Later, when they were both in the afterlife, Gyutaro tried to push her away from him, showing that he wanted her to have a new start in life without him being a bad influence on her.

Tengen Uzui
Gyutaro despises Uzui due to his flashiness and having three wives. He attempts to murder Tengen in his battle and constantly mocks him for succumbing to his poison.

Tanjiro Kamado
Gyutaro shows himself to be incredibly arrogant towards Tanjiro, mocking him for being unable to cut off his head or protect his sister, even breaking two of his fingers and mocking him for being weaker than Nezuko. However, he does admit that, although Tanjiro is "disgraceful", he doesn't dislike him, going on to say that he loves things that are disgusting and pitiful, even offering him the chance to turn into a demon and stating that, if he accepts, they'll be friends. However, Tanjiro refuses his offer. After managing to cut off Gyutaro's head, he witnesses, with visible shock, Gyutaro and Daki's argument. When Gyutaro tells Daki that she shouldn't have ever been born, Tanjiro covers his mouth and tells him how all they have is each other and that they shouldn't spend their last moments arguing with each other. After Gyutaro and Daki both pass away and venture into the fires of Hell together, Tanjiro wonders if they were able to make up.