The B1 League is a professional basketball league in Japan, known for its competitive teams and talented players. Established in 2016, it serves as the top tier of men's basketball in the country, featuring clubs from various regions. The league aims to promote basketball culture and improve the overall standard of the sport in Japan. The B1 League operates under the umbrella of the B.League, which also includes the B2 and B3 leagues. Teams compete for the championship title, and the league has gained popularity among fans, contributing to the growth of basketball in Japan.