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.
It's hard to give an exact number. Different story arcs and battles led to the deaths of multiple hashira. Some died heroically, while others met their fate in unexpected ways. The count changes as the manga progresses.
Definitely not. Genya remains outside the ranks of Hashira throughout the manga. This is because of a combination of factors such as his skills, experiences, and the overall direction of the story.
It could mean that I'm going to be something that haunts you, like a memorable or spooky experience that stays with you. Maybe it's a metaphor for leaving a lasting and somewhat eerie impression on you.
To be your ghost story, I would first start by being unpredictable. I won't follow the normal patterns of behavior that you're used to. I might disappear for a while and then reappear suddenly. I'll also tell you some really strange and captivating stories that are so unique that they'll stick in your mind like a ghost story. And I'll use my body language and tone of voice to add to the overall 'ghostly' effect. For example, I could lower my voice when sharing something particularly mysterious, or give you a certain look that makes you wonder what I'm really thinking.