Tokyo is particularly well known for it. https://www.japantimes.co.jp/community/2013/03/09/our-lives/sleeping-on-the-train-a-rite-of-passage-into-japanese-soci

Tokyo is particularly well known for it. https://www.japantimes.co.jp/community/2013/03/09/our-lives/sleeping-on-the-train-a-rite-of-passage-into-japanese-society/ https://www.japantimes.co.jp/community/2013/03/09/our-lives/...