There is little doubt that Zenitsu Agatsuma isn't the bravest warrior in Demon Slayer: Kimetsu no Yaiba. However, this quickly changes when he loses consciousness and turns into a lean mean fighting machine. Interestingly, Zenitsu doesn't just fight when he's asleep. The latest episode of Season 2's Entertainment District arc confirms that the blond swordsman can do so much more despite being deep in slumber!
In Demon Slayer Season 2 Episode 12, it was revealed that the sleeping Zenitsu had been taken by the Obi Demon to its underground lair. Luckily, Inosuke Hashibira managed to find the tunnel that leads to the lair and immediately proceeds to cut the obi, releasing the people trapped within. In addition to releasing Tengen Uzui's wives Suma and Makio, Zenitsu escapes the obi and springs into action ... while still asleep.
Inosuke is clearly impressed with Zenitsu's moves and says he should stay asleep more often. That's exactly what happens in Demon Slayer Season 2 Episode 13 as Uzui takes the both of them out of the lair to track down Daki.
As Uzui runs ahead of them, Inosuke realizes that Zenitsu is still asleep while running beside him. He continues to be impressed with his companion's skills and there is little doubt we'll see more of what Zenitsu is capable of in the upcoming episodes.
We already know Zenitsu could do a lot more if he conquered his fear of demons and this is especially true when he is unconscious. Needless to say, we can't see more of him in action soon.
Demon Slayer: Kimetsu no Yaiba Season 2 Episode 14 is titled Transformation ("Henbo") which is a clear reference to the manga's 83rd chapter. Episode 7 of the Entertainment District arc will premiere on Sunday, January 16, 2022, at 11:15 PM JST.