Demon Slayer Manga Chapter 166

Kokushibo’s battle with Muichiro takes an even darker turn when Genya tries to attack him from behind. The Upper Rank One moves so quickly that Genya barely has time to react, leaving him severely wounded. Muichiro can only watch in horror as Kokushibo prepares to finish him.

In Demon Slayer Chapter 166, Sanemi arrives just in time to save his younger brother. His anger quickly turns into something more personal as he reveals that he never hated Genya and only wanted him to live a normal life away from the Demon Slayer Corps. The emotional moment gives Genya a new understanding of his brother before Sanemi turns his attention back to Kokushibo and launches into the fight.