Shu Kurenai (紅シュウ, Kurenai Shū) is the deuteragonist of the anime and manga series, Beyblade Burst. He currently battles with his Beyblade, Turbo Spryzen 0Wall Zeta'. In addition, Shu is one of the Supreme Four being the runner-up of previous year's National Tournament and a member of the Big Five. In Beyblade Burst Evolution, he joined the American team, the Raging Bulls, to battle in the World Championships, later secretly becoming Red Eye, a major antagonist. For a while, he became possessed by his Bey, but was eventually saved by his best friend, Valt Aoi. He is the runner-up of the International Blader's Cup. In Beyblade Burst Turbo, he is now the current owner of the Raging Bulls.

Beyblade Burst
Valt Aoi is a hot-blooded kid who loves to attack and wields a Beyblade named Valkyrie. His close friend Shuu Kurenai is an elite Blader who is a genius but still puts in a lot of effort, and wields the Beyblade named Spriggan.

Beyblade Burst Evolution
Sequel season for the original Beyblade Burst. Valt Aoi is a hot-blooded kid who loves to attack and wields a Beyblade named Valkyrie. His close friend Shuu Kurenai is an elite Blader who is a genius but still puts in a lot of effort, and wields the Beyblade named Spriggan.

Beyblade Burst Turbo
Sequel season for Beyblade Burst Evolution. Valt Aoi is a hot-blooded kid who loves to attack and wields a Beyblade named Valkyrie. His close friend Shuu Kurenai is an elite Blader who is a genius but still puts in a lot of effort, and wields the Beyblade named Spriggan.

Beyblade Burst Super King
One year after the events of Beyblade Burst Rise, brothers Hikaru, and Hyuga witness the power of superking/sparking evolutions of Valtryek, Roktavor, and Satomb. The three beys radiate a power that was not even dreamable, due to their bladers pulling off a sparking launch. Hyuga and Hikaru get inspired to make their own sparking beys, Hyperion and Helios, and compete with the legendary bladers, training to best the top ranked bladers to ever touch the stadium. Prepared to do whatever it takes to become the best, they head across the globe to challenge the best to ever let it rip, in an effort to become stronger, and battle all of the top bladers that were able to make their mark in the stadium.