Comics responded in various ways. Some used the event as a backdrop for heroic stories, while others explored the emotional and psychological impact on characters and society.
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.
Peter Parker's reaction was one of determination. He was motivated to do more to prevent such tragedies in the future and was driven to be a stronger hero. His emotions were a mix of grief and a resolve to make a difference.
MJ's reaction to Peter varied depending on the situation. Sometimes she was scared for his safety, but mostly she trusted and believed in him. Her feelings for him also influenced her reactions.