Delivering his first speech since ascending to the Chrysanthemum Throne, Japan's new emperor vowed Wednesday to "act according to the Constitution" and fulfill his role as the symbol of the state while "always turning my thoughts to the people," following in the footsteps of his father.

"In acceding to the throne, I swear that I will reflect deeply on the course followed by His Majesty the emperor emeritus and bear in mind the path trodden by past emperors, and will devote myself to self-improvement," Emperor Naruhito said in the brief speech — broadcast live on TV — before the heads of the government, legislature and judiciary in a ceremony attended by imperial family members and other government officials.

"I will act according to the Constitution and fulfill my responsibility as the symbol of the State and of the unity of the people of Japan, while always turning my thoughts to the people and standing with them," he said.