Demon Slayer Manga Chapter 43
In Demon Slayer Chapter 43, titled “Thunder Breathing, First Form”, Zenitsu Agatsuma finally reveals his true strength. Cornered by a demon with a grotesque spider-like appearance, Zenitsu falls unconscious from fear—but in this state, he instinctively unleashes his powerful Thunder Breathing First Form: Thunderclap and Flash. Moving with lightning speed, he defeats the demon in a single, precise strike. The chapter also explores Zenitsu’s harsh training under his strict master, revealing the painful journey behind his strength. This moment marks a turning point in his character development.
