For wrestler research:
Top 10 legendary Yokozuna from all time

https://en.wikipedia.org/wiki/Asash%C5%8Dry%C5%AB_Akinori
https://en.wikipedia.org/wiki/Taih%C5%8D_K%C5%8Dki

Hakuho's career - an NHK overview

https://www.hindustantimes.com/sports/the-greatest-sportsman-you-ve-never-heard-of/story-SsHTJ8YYE8RT2riMUUMquO.html
https://www.theguardian.com/sport/2015/jan/25/hakuho-rewrites-sumo-history-with-record-breaking-33rd-championship
https://grantland.com/features/sumo-wrestling-tokyo-japan-hakuho-yukio-mishima-novelist-seppuku/
https://www.arabnews.com/node/1487801/offbeat
The secret to Hakuho's success: (1) The role of Ryuo
**There's a multi-series here that's really good! Keep watching them!!! There's 9 to date 4/14/20.

https://www.nikkansports.com/battle/sumo/news/202004110000646.html
https://www.youtube.com/watch?v=UunoqnApsSg
https://www.youtube.com/watch?v=yOfMtyGShPA
https://en.wikipedia.org/wiki/Taih%C5%8D_K%C5%8Dki
https://en.wikipedia.org/wiki/Chiyonofuji_Mitsugu
https://en.wikipedia.org/wiki/Akashi_Shiganosuke
https://www.japantimes.co.jp/sports/2018/09/10/sumo/unraveling-sumos-iconic-fashion-item/#.XpSCEtNKjfZ
http://www.e-sanpuku.co.jp/sumo/ring_en.html

Taiho Sumo 45 match win streak YouTube https://youtu.be/UunoqnApsSg

Chiyonofuji Mitsugu (千代の富士 貢) 53 match win streak

For Q & A:
https://www.japantimes.co.jp/sports/2018/09/10/sumo/unraveling-sumos-iconic-fashion-item/#.Xo-JL9NKg_U
https://grandsumointl.com/2020/04/09/undisclosed-wrestler-testing-for-virus-further-postponements-cancellations-likely/

Music

"Advanced Japanese Folk" by Audiotoolz

https://freemusicarchive.org/music/Audiotoolz/Progressive_Folk/02_-_audiotoolz_-_advanced_japanese_folk

Under creative commons license: https://creativecommons.org/licenses/by-nc-nd/3.0/

Intro/Outtro music by MARiAN - Tokyo Trap.