It should be noted that when it comes to overall strength and stamina, Inosuke's abilities are far more impressive than those of Zenitsu, as was best seen in the final battle against Muzan where he got up against the Demon King far more times.

Source: https://gamerant.com/demon-slayer-inosuke-vs-zenitsu-whos-stronger/

Protagonist Tanjiro Kamado sometimes feels apprehension when facing stronger demons such as Kyogai, Rui, and Daku, while Zenitsu Agatsuma will always scream in terror and run for his life.

Source: https://www.cbr.com/anime-heroes-braver-than-ichigo-kurosaki/

Sadly, she meets her demise when she is decapitated by Zenitsu and Inosuke.

Source: https://gamerant.com/demon-slayer-best-villains/

With a single thunderclap, Zenitsu shot forth with incredible speed and unleashed the power of lightning.

Source: https://www.cbr.com/best-anime-boy-glow-ups/

Zenitsu also has a strong tendency to hit on girls he finds cute and is very expressive about his emotions in these moments too.

Source: https://gamerant.com/demon-slayer-how-powerful-is-zenitsu/

Zenitsu is one of the most beloved characters in the series.

Source: https://gamerant.com/demon-slayer-best-breathing-techniques-users/