Mitsuri Kanroji, the Love Hashira, makes her first proper appearance in 'Demon Slayer: Kimetsu no Yaiba' during the Swordsmith Village Arc. If you're watching the anime, she pops up in Season 3, specifically in Episode 2, titled 'Yoriichi Type Zero.' That's when we get to see her vibrant personality and unique fighting style in full swing. Before that, she had a brief cameo in the Mugen Train Arc during the Hashira meeting scene, but it's more of a tease than an actual introduction.
What I love about Mitsuri's debut is how instantly memorable she is—her pink-green hair, her flirty yet kind demeanor, and that signature revealing uniform. The anime does a fantastic job adapting her from the manga, especially in how her movements are animated with such fluidity. If you're a fan of her character, the Swordsmith Village Arc is where she really shines, both in battles and in her interactions with Tanjiro and the others.