Kanao survives in the manga. The story doesn't have her dying. The character's journey continues throughout without that tragic end.
In the manga, Tanjiro and Kanao don't end up getting married. The story focuses more on their battles and character development rather than romantic pairings.
No, they don't. There's no such scene in the manga.
I'm not sure. You might have to read the manga yourself to find out for sure.
No, Levi doesn't die in the manga. His fate is different from what some might expect.
Kaeya doesn't die. The manga continues with him as an active and present character. His storyline progresses without such a fatal event.
No, Inosuke doesn't die in the manga. The story keeps him alive throughout.
No, she doesn't. The story doesn't have her dying.
Nami doesn't die. The manga keeps her as a significant and surviving character with ongoing plot developments and adventures.
Sure, Dio meets his end in the manga. His demise is a significant plot point and has a major impact on the story's development.