Japan's 'Mundane' Halloween Costumes Are So Ordinary They Need Explaining
Japan's Jimi 'Mundane' Halloween Costumes of 2026

Every year, Japan celebrates Jimi Halloween, where people dress as everyday moments instead of witches or zombies. The tradition began in 2014 with a group of adults at Daily Portal Z who felt too embarrassed for flashy costumes. This year's standouts include a person trying to take a group photo in a tiny izakaya, someone who didn't realize they'd have to remove their shoes at a business dinner, and a woman refilling her dispensers.
Mundane Halloween, as we coined it back in 2018, is when people dress up in costumes so mundane they have to be explained.
- numpad0
The last one refilling detergent is a parody of The Milkmaid by Johannes Vermeer; everyone has seen it on textbooks and it has become a meme template on Japanese Twitter in recent years.
- happytoexplain
Some of these are very humorous because of the cultural disconnect (as an American, I have never experienced somebody asking to put their seat back).
"An expert on a very niche subject" made me laugh out loud the hardest, because it's the one that's most "just a guy", and yet it's also exactly how it's described.
- Waterluvian
These are masterpieces in my opinion. It’s difficult to get the vibe exactly right when you’re working with so little.
Yes, a thousand times yes you can put your seat back you gentle soul.