Taisho Sushiya owns Komaba Sushi, a 200-year-old restaurant serving as the official sponsor for Team Persona. He inherited the family establishment, forcing him to abandon his dream of becoming a Pro Blader. Despite this, he maintained his Beyblading passion through 15 years of regular practice and followed Pro Blader Takumi Ishiyama's career since its debut.

Renowned for inventive culinary creations, Taisho crafts unconventional sushi dishes like red bean and cream sushi, chocolate banana, habanero sauce caramel popcorn, crab miso vanilla, and salmon custard, favorites of Team Persona member Jaxon Cross. His divided attention between sushi innovation and Beyblading impacts restaurant efficiency. His primary ambition is supporting Team Persona's ascent to the pinnacle of The X competitive tower.

Komaba Sushi serves as a central hub for Team Persona. The restaurant features a customized Beystadium; the manga shows the bar counter transforming into an Xtreme Stadium, while the anime depicts a dedicated stadium in a renovated wardhouse beneath the restaurant. This location hosts key events: Team Persona securing its sponsorship, Multi Nana-iro developing custom Beys like Chain Incendio and Dagger Dran, and Tenka Shiroboshi challenging Blader X.

Taisho actively battles with the Defense-Type Beyblade Keel Maguro 3-60LF. Its signature move, "Xtreme Dash: Maguro Fang," utilizes the stadium's gear system for an uppercut attack from below. He demonstrated this technique successfully in a documented Beybattle against "Number One," achieving a 1-0 victory.