What’s the largest stadium in Japan?

What's the largest stadium in Japan? worldofstadiums.com a lot of Japanese stadiums, the Nissan Stadium seems to be the largest football stadium in Japan.

Yes, Nissan(Yokohama) studium about 72000 seats is the largest
as for pure sports(not only football) and other events music concert and more.
https://en.wikipedia.org/wiki/List_of_association_football_stadiums_by...

(note)
AUTO race circuit/international race way Suzuka[—鎭],Fuji[•xŽm] and more
with over 100000 seats exist but is that "stadium"?
http://www.jaf.or.jp/msports/course/circuit/index.htm

And...
In 2019 MAR "NEW" National stadium in Tokyo will be 80000 seats
for Tokyo Olympic 2020 main stadium opening ceremony and more.
https://www.jpnsport.go.jp/newstadium/Portals/0/NNSJ/en/first.html
Building starts next month OCT 2015.

And...
In 2019 MAR "NEW" National stadium in Tokyo will be 80000 seats
for Tokyo Olympic 2020 main stadium opening ceremony and more.
https://www.jpnsport.go.jp/newstadium/Portals/0/NNSJ/en/first.html
Building starts next month OCT 2015.

Except that those plans were scrapped as of July 2015. Currently they are working on getting new design submissions, so building will be delayed.