Season 4 Hashira Training Arc Characters Plot Development Character Development Action Sequences Character Interactions Training Sessions Season 4 Episode 6 Season 4 Episode 8 Action Scenes Season Finale Season Criticisms Future Developments Season 4, Episode 8: The Hashira Unite Plot Developments Season 4 Finale Muzan Kibutsuji Infinity Castle Arc Fan Engagement Premiere Storyline Training Fan Reactions Fan Reception Production Quality Season 4 Episode 4 Training Arc Production Team Plot Structure Training Sequences Episode Review