* New ceremony underscores drive to shore up national pride
* Emperor's attendance adds weight to ceremony
* PM popular over economic policy, turns focus to security
Prime Minister Shinzo Abe called on Sunday for a rewnewal of a "sense of hope and determination" in marking for the first time the restoration of Japan's post-war sovereignty, part of a drive to repair what conservatives consider dented national pride.
Abe, who is riding a wave of popularity after being swept back into office in a landslide election last December, wants to revise the post-war, U.S.-drafted pacifist constitution and rewrite Japan's wartime history with a less apologetic tone.
His Liberal Democratic Party (LDP) pledged during the campaign to make April 28 "Restoration of Sovereignty Day", to mark the day in 1952 when the San Francisco Peace Treaty took effect, formally ending World War Two and the Allied Occupation.
"I want to make this a day when we can renew our sense of hope and determination for the future," a sombre Abe, 58, told a ceremony in a hall near parliament attended by about 400 officials.
"We have a responsibility to make Japan a strong and resolute country that others across the world can rely on."
The San Francisco Treaty officially declared an end to the war, required Japan to relinquish claims on other countries and territories and determined war compensation.
Giving added weight to the ceremony was the presence of Emperor Akihito, 79, and Empress Michiko. Participants, mostly men in dark suits, threw their hands up into the air and cried "banzai!" or long life, to send the royal couple off.
Akihito's father, Hirohito, was Japan's wartime leader, and made a historic broadcast announcing the terms of surrender to his people in 1945.
After returning for a second stint as prime minister, Abe initially focused on policies to revive the stagnant economy.
His popularity rating stands at around 70 percent, largely on hopes for his "Abenomics" mix of big spending and hyper-easy monetary policies, but there are doubts about the level of popular support for his agenda outside of economics.
The prime minister has devoted greater attention in recent weeks to a more hawkish stance on security and Japanese history ahead of a July upper house election that his ruling bloc needs to win to cement its grip on power.
Abe has defended the visits in the past week by more than 160 lawmakers to the Yasukuni shrine, which honours Japan's war dead but offends neighbouring countries because it also honours Japanese war criminals.
CHINESE, SOUTH KOREAN OBJECTIONS
Both South Korea and Japan, where memories of Japanese military occupation remain fresh, were angered by the visits. Seoul summoned the Japanese ambassador and cancelled a visit to Tokyo by its foreign minister.
Japan has also been embroiled in a territorial dispute over uninhabited islets in the East China Sea, with Abe last week saying it would be "natural" to use force to repel any Chinese attempt to land on the islands.
Abe has also refused to clarify whether his cabinet endorses a landmark apology for Japan's aggression before and during World War Two, issued by a previous governmnet in 1995.
Abe has made clear that he wants to eventually revise Article 9 of the 1947 constitution to set down Japan's right to maintain a military for self-defence. He first plans to try to ease the procedural requirements for constitutional changes.
He also wants to change the interpretation of the constitution that has prevented Japan from exercising its right to collective self-defence, or aiding an ally under attack.
Sunday's ceremony upset residents of Japan's southern island of Okinawa, which remained under U.S. control for another two decades until 1972. Okinawa is still a reluctant host to the bulk of up to 50,000 U.S. military forces in Japan.
Residents of Okinawa held a counter-rally on Sunday describing the commemoration as a day of "humiliation" for Okinawa and not a true return of sovereignty to Japan.
"In addition to Okinawa's history, we can never forget the great burden that Okinawa bears for our national security," Bunmei Ibuki, a lower house LDP member, told the rally.