The Melancholy of Haruhi Suzumiya, created by Nagaru Tanigawa in 2003, is a popular light novel series and anime that explores themes of existentialism, time travel, and alternate realities.

Katsuobushi, a type of dried and smoked tuna that is often used to flavor dishes and is a key ingredient in dashi.

In Japan, there is a toilet museum that showcases the evolution of Japanese toilets and the culture surrounding them.