It's not poison, Muzan just injected a big amount of blood into Tanjirou causing it to have an effect similar to poison, VIZ's translation made it seem like Muzan was capable of changing the properties of his blood but the raw stated that Tanjirou would die because it's just "Too much blood".
Genya's body wasn't completely cut in half, only his head and part of his body's upper half was cut. We can see clearly that his body disintegrated in the leaked pages.
There isn't any set rule that stipulates that the 5 senses should all be alive and beat muzan since none of them share the same grudge towards Muzan as Tanjirou and it's not like they're completely alike since we know that Urokodaki too has a good sense of smell. With Kokushibou it was...
I feel that Kokushibou dying before getting the chance to run into Tanjirou would be borderline bad writing after all of the soft build up between them with the entire sunbro plotline.
I'm pretty sure that Tanjiro already entered the see through world in two different occassions before, the first one against Daki (similar dialogue and different-looking eyes/hair shading) and towards the end of the battle against UM4.
Logically speaking, this CAN be Zenitsu's last fight.
Zenitsu's dream was to become strong in order to be useful to everyone, to leave his weakness and insecurity behind. By overcoming the fact that he only could fight while sleeping and also creating a new style of the breath of thunder, his...
"Racing into the explosive final chapter. " doesn't necesarily means that we're on the final arc, take Dr.Stone "Chapters" as an example.
Grudge match time huh, judging by the fact that Tanjirou could dodge and counterattack Akaza, it's fair to assume that he has surpassed Rengoku in...