A loose union of states that sustains itself mostly on the satisfaction of a well-oiled economy. The PPS is the least stable of the world's governments, with frequent disagreements between member states.
When WWIII began, China did not fire its nuclear arsenal, leading to a careful stalemate that was broken by the nuking of Taiwan once more extremist rings of the government pushed to join the nuclear parade. Japan and nearby allied nations, supported by the local Pacific US Navy fleet, strategically took out the Chinese Army leadership, disabled its nuclear capabilities and eventually assassinated the president and some members of the government in a spectacular (and clearly long planned) operation that lasted two full weeks. China briefly split into a number of self-governing regions, only to be then reunited by a strong leader who managed to rally the Chinese population. In order to support each other in the rebuilding of the Pacific nations, Japan and China allied, and so the nearby states followed - to this day, the Pan-Pacific States remain the least stable but most economically powerful government in the world.
Forward, united.
Officially, the PPS recognizes Mandarin, Hindi, Indonesian and Japanese as its languages. In the field of rights and social matters, the PPS is notably lacking: while the EF and NAR have made progress to implement social justice policies, the PPS has been slow in adapting and has only recently passed similar laws, in part due to its clash between more communist aspirations in China and still fervently nationalist ideals in Japan. Some parts of the union still suffer from heavy discrimination and infighting, and political differences are most evident here than elsewhere. Technology, however, is on the forefront of human capabilities. Asian companies and conglomerates like TriStar and Jincan have breached limits previously conceived, with the highly encouraged and publicly funded development of AI, robots, genetics and similar.
The PPS, usually just called the Pan-Pacifics or the Pacific Union, is quite varied, but shares one common trait: excess. China and Japan battle each other over who has the most flashy neon lights, the most creative hologram displays, the biggest drone lightshows. From orbit, the Pacific shines like a diamond. Cities and nations in this union are entirely alien to America or Europe in their level of technology and prosperity: maglev is considered standard, not an innovative technology, cars are mostly electric, drones and hovercars are as ubiquitous as advertising airships and megastructures, like Japan's Ministry of Defense pyramid-shaped construction.
The Pacific is the pinnacle of technological progress, and although the rivalry between China and Japan leads to constant fighting, both nations have a general understanding that their flimsy alliance is required to remain relevant on the galactic scale.
The Pan-Pacific Navy is unique in that, aside from being fielded by each separate country, is mostly made up of automated and remote controlled ships. The smaller ships can be controlled by a small crew, whereas carriers are flown manually and they deploy a vast number of drones, then piloted automatically by the ship's central AI. The only difference are a few major flagships still flown by a full crew, like the JS Kongo or the Chinese ship Fujian.
The PPS' main concern is rarely fighting in the first place, and is instead mostly border patrol, support for colonization efforts and preventing another civil war. As such, these drones, able to be taken over by one of many control centers around the Sol System, are extremely efficient, requiring no crew (so no oxygen and life support) and very little fuel.