The Mugen train arc isn't counted as a season so Sword smith village is season 3, The hashira training arc is gonna be the next one and will come out spring 2024 most likely but also might not count as season 4, that'll be the infinity castle and who knows how long that's gonna be.
The Mugen train arc isn't counted as a season so Sword smith village is season 3, The hashira training arc is gonna be the next one and will come out spring 2024 most likely but also might not count as season 4, that'll be the infinity castle and who knows how long that's gonna be.