Imagine a Gacha Club character that was created by a player who then abandoned the game. This character was all alone in the game world. It had no purpose as the player who was supposed to guide its story was gone. It would watch other characters having fun with their players, and it just felt so left out and sad, like it was a forgotten entity in the Gacha Club universe.
One sad story in Gacha Club could be about a little cat - like character. This character had a dream of becoming a famous singer in the Gacha Club world. It practiced day and night, but when the big audition came, it got really nervous. And due to a technical glitch, its voice didn't come out right during the performance. Everyone laughed at it. After that, it lost all its confidence and hid away, too ashamed to face others again.
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.