Why is the national emblem of the Japanese government the family pattern of Toyotomi Hideyoshi?

These 375 paulownia trees were used by the Japanese royal family, and they were given to the founder of Muromachi shogunate, Ashikou Zunshi. Later, it spread to Ashikaga Yoshiaki, the last general of Muromachi shogunate! In order to thank and woo Nobuyuki ODA, I gave him Sanqi ~! Nobunaga asked Toyotomi Hideyoshi (also called Yuchai Hideyoshi at that time) to suppress and humiliate Ashikaga Yoshiaki! Later, after the Toyotomi family was destroyed by Tokugawa Ieyasu, it returned 375 children to the emperor, showing celebrities that the Toyotomi family had been destroyed. Our Tokugawa family is the master of the world ~!