Few could have predicted that seven years ago today, the debut of Demon Slayer would mark the birth of a powerhouse that shattered global anime industry records. Once overshadowed by My Hero Academia, Tanjiro’s journey rewrote history in ways no one saw coming.
Humble Beginnings: Not Every Ufotable Project Explodes Immediately

On April 6, 2019, the first episode of Demon Slayer: Kimetsu no Yaiba aired. At that time, Koyoharu Gotoge’s original manga in Weekly Shonen Jump was quietly successful but still overshadowed by louder hits like My Hero Academia. Despite a dedicated fanbase, the series remained under the radar.
Even with Ufotable, the studio behind the stunning Fate/stay night visuals, crafting the adaptation, Demon Slayer had a relatively quiet start during the Spring 2019 anime season. For the first half of the season, it attracted a loyal core audience but hadn’t yet broken out beyond the Jump fan community.
Episode 19: The Turning Point That Changed Everything

Everything shifted dramatically with episode 19. The battle between Tanjiro and Lower Moon Five Rui, along with the awakening of the Hinokami Kagura (Dance of the Fire God) technique, caused a social media sensation.
The flawless blend of music, top-tier cinematic effects, and emotional storytelling by Ufotable made this scene go viral like never before. It drew in anime fans who hadn’t read the manga and even attracted mainstream viewers outside the typical anime bubble. This marked Demon Slayer’s official breakthrough into global pop culture.
Dominating the 2020s and Breaking Unprecedented Records

Riding the viral wave from episode 19, Demon Slayer became the defining anime of the 2020s. Its rise coincided with global lockdowns, boosting viewership dramatically. Following this success, the Mugen Train movie shattered box office records in Japan, becoming the highest-grossing film in the country’s history.
The franchise’s success extends beyond revenue. It bridged generations, bringing new fans into anime and reigniting passion among longtime enthusiasts. Since the 2000s, no anime has had such a profound cultural impact.
A Legacy for the Decade

Now, after seven years, Demon Slayer stands as a true giant, with its success guaranteeing high expectations for future projects, from upcoming TV seasons to the concluding Final Trilogy movies.
Looking back from its overlooked beginnings to becoming a generational icon, we see the incredible power of a high-quality anime adaptation. Demon Slayer is more than just a series, it’s proof that one work can forever change the anime world.