Kyojuro Rengoku shouts umai repeatedly while eating a bento box in Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train, released in 2020. The moment became one of the character's most quoted scenes because his sincere delight contrasts with his powerful image as a Hashira. Clips of the shout spread across TikTok, YouTube and anime edits, usually isolated as a single loud umai. It remains popular for food content and reaction memes, where his voice has become shorthand for loving something far more openly than expected.