"Since I have gained the people's mandate through the general election, I now plan to speedily implement policies", the agency quoted Kishida as saying.
The prime minister also reportedly announced his intention to double as foreign minister in case Toshimitsu Motegi, the country's acting foreign minister, is appointed secretary-general of the ruling Liberal Democratic Party. Kishida will act as foreign minister until the composition of the new cabinet of ministers is approved, Kyodo News says.
According to the Japanese media, Motegi will officially assume his new post on Thursday, replacing Akira Amari, who has occupied the position since September. Meanwhile, former Defence Minister Yoshimasa Hayashi is reported to be a possible candidate for foreign minister.
The Japanese Parliament is expected to convene a special session on 10 November to formally elect the prime minister of Japan. Since the party represented by Kishida received over half of the parliamentary vote, the session will be just a formality.