※NOTE：This article includes spoilers.
This time, We would like to summarize the Zenitsu said drawn in episode 136 of the manga Demon Slayer, “What to do” and “It’s just clear that I have to do it.”
Contents
The beginning is …
The beginning of the story is episode 135.
It begins when a letter arrives from the Kasugai crow during the Hashira training by the rock Hashira.
There was no description after the letter arrived here, but in the following episode 136, Tanjirou is concerned about the strange appearance of Zenitsu and talks to Zenitsu, but Zenitsu says “what to do” and “must do”. “I just understand that i should be done for it.”
Tanjirou said out “anything I can do”, but Zenitsu says “Thank you” and “This is absolutely something I have to do”.
War in the Mugenjyou.
The story goes on, 143 episodes.
As the total war between Demon Slayer Corps and the demons begins at Mugenjyou, Zenitsu confronts the upper ranked demon 6 and says, “Kaigaku, you are demon, so I don’t think you’re a Brothers anymore.”
It seems that the Upper ranked demon 6 was Kaigaku, a brother of Zenitsu.
Then, 144 episodes.
Zenitsu seems to have already known that Kaigaku had become a demon.yes.The letter he received from Kasugai crow during the Hashira practice said that.
In addition, it seems that the letter also stated that the master’s grandfather (Jigorou Kuwashima) died because his disciple became a demon.
Zenitsu was angry and decided that defeating his master’s disciple kaigaku was “what to do”, and he seemed to be working hard to practice.
Summary：
Zenitsu was angry and decided that defeating his master’s disciple kaigaku was “what to do”, and he seemed to be working hard to practice.