◆ Role in the Story (Spoiler-Free)

Note: This section only covers early story developments and avoids major plot spoilers.

Initial Role and Impression
When first introduced, he is portrayed as an extremely cowardly character who is always trying to run away. However, he also possesses the courage to stand up for his comrades when necessary, and this gap becomes part of his charm. Initially serving mainly as comic relief, he gradually becomes depicted as an important fighting force in the story.

Important Turning Points
A major turning point in Zenitsu's story is the process of becoming aware of and accepting his sleeping ability. Additionally, learning about his master Jigoro Kuwajima's past and the truth about his death adds depth to his character. His gradual gain of confidence while fighting alongside his comrades is also impressive.

Character's Appeal
Zenitsu's greatest appeal lies in the duality of his "weakness" and "strength." His trembling in fear yet summoning courage when needed resonates with many readers and viewers. Additionally, his simple way of life focused on perfecting a single technique highlights his individuality. His devoted love for Nezuko and occasional displays of passion are also part of his charm.

Contribution to the Work
In the world of "Demon Slayer," Zenitsu plays an important role as a character symbolizing human weakness and strength. Also, by possessing a fighting style different from Tanjiro and Inosuke, he brings diversity to battle scenes. He contributes significantly to the overall tempo and emotional fluctuations of the story, appearing in scenes ranging from comedic to intense battles.

Source : DemonSlayer Official