Inosuke doesn't become a Hashira in the manga. The story progresses with him having other significant experiences and achievements instead of achieving that specific position.
I'm not really sure what you mean by 'kanao comics hentai'. It might refer to some adult-oriented or inappropriate content related to a particular character.
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.