A boy tourist from China who startled a Japanese couple by squeezing into their bullet train seats to view Mount Fuji has triggered a heated discussion about manners on Japanese social media. The experience was shared by another passenger of the Tokaido Shinkansen, the bullet train that runs from Tokyo to Osaka, to the Japanese media outlet Weekly Spa!. The line offers a famous view of Mount Fuji, but the view is only available to passengers sitting on the correct side. The anonymous passenger...