At the beginning of the episode, Zenitsu’s sparrow Chuntaro brings him a letter. Zenitsu tries to brush him off but the little bird is insistent, meaning that whatever was in that letter was important ...

This article contains spoilers for the Demon Slayer manga. Zenitsu does not awaken the demon slayer mark, defeating Kaigaku with a new technique instead. To unlock the mark, one must survive ...