In some ways, the ongoing 2019 Rugby World Cup has been seen as a test run for how Japan's hosting of the 2020 Olympic Games may go in terms of accommodating an influx of visitors from abroad. While much of the preparation centered around installing expected amenities such as foreign language guidance and wi-fi in areas usually no equipped with them, there has been some effort to ready locals for differences between them and foreign-traveling sports fans themselves--with the Rugby World Cup organizing committee even instructing establishments close to venues to prepare extra supplies of beer.

While there is hardly any special expectation of traveling sports fans in Japan (well, outside of doing your best to clean up after yourself), it's always important to remember encouraged etiquette in Japan outside of venues--particularly when on the train. Sometimes, a lack of understanding regarding Japanese local train manners (speaking loudly, talking on the phone, eating, or taking up too much space are generally frowned upon) has caused friction between Japanese and foreign commuters(resulting in humorous railway posters giving manners instruction).

Some of those misunderstandings may have been on display following France's opening victory over Argentina in the 2019 Rugby World Cup, as Japanese Twitter user @nontage uploaded a video of celebrating fans riding Tokyo's Keio line. The video shows fans lying in the aisle of the train, and conducting a crowd surfing situation.

@nontage says that at first the celebration appeared in good fun, but once it started to bump uninvolved commuters, they decided to change to a different train car. They further clarify that they aren't trying to say all French fans are like this, even mentioning that a fellow fan also moved away to another car with them. While several replies to the video write it off as innocent fun in an isolated incident, many have expressed distaste for the lack of awareness and concern for how fans may conduct themselves on trains next year during the Olympics.