Zenitsu Agatsuma Is Not Just a Coward! Even “Demon Slayer: Kimetsu no Yaiba” Viewers Were Stunned by His Dazzling Thunderclap and Flash!

Zenitsu Agatsuma (voiced by Hiro Shimono) from the anime "Demon Slayer: Kimetsu no Yaiba" is a swordsman in the Demon Slayer Corps, but he's an extreme coward who often bursts into tears and cries out loud. It’s easy to assume he’s just a comic relief cowardly character—but is he really? When he demonstrates his true abilities with his special move, “Thunder Breathing First Form: Thunderclap and Flash,” many viewers instantly became his fans.

Episode 12 of "Demon Slayer: Kimetsu no Yaiba Tanjiro Kamado, Unwavering Resolve Arc" revealed the hidden power of Zenitsu. When threatened by a demon saying, “I’m going to slurp up your brains through your ears,” Zenitsu fainted from sheer terror. However, this is when Zenitsu truly shines as a swordsman. Upon falling asleep, he instead “awakens,” and with a composure completely unlike his usual self, he enters battle mode. He instantly slays the demon with a single strike: “Thunder Breathing First Form: Thunderclap and Flash.”

This sudden overturn of Zenitsu’s previously cowardly impression had viewers raving with comments like, “Huh? Zenitsu is insanely strong! What is this? LOL,” “Zenitsu was seriously cool for a moment. Even if it was just a moment,” “He really does have ability—it’s just his personality, that’s all,” and “The gap is amazing.”