Great Eulhae War

The Eulhae War, was a vast global war from 1935 to 1943. The vast majority of Tiandian countries entered into alignment with either placeholder or placeholder, mobilizing all their economic and military resources in total war. The war was principally fought in Sinju and Yoju, with broader fighting occurring in the rest of the world. An estimated 80 million fatalities were recorded in this war, making it the most deadly in Tiandian history.

Etymology
The Eulhae War started in 1935, with the year being 乙亥 (Eulhae) in the sexagenarian calendar cycle; this gave the name to the war. 1935-02-04 (CNY 1935)

Prewar

 * December 1934- A coup in Nabei results in the establishment of a pro-Xencovian government, denounced by Nukigurun.
 * February 1935- Nukigurun presents an ultimatum to Nabei government, telling it to step down or otherwise face intervention.
 * March 1935- Nukigurun invades Nabei; war is declared by Xencovia.
 * May 1935- Jeongmi declares war on Nukigurun.

Uju
So the war begins with expansion into the light grey land possibly in 1933 or 34, but the world doesn't care because "the world" is mainly Sinju and Akitsukuni is the only nation in the area not made up of filthy natives. In 1935, unrelated to the Sinju War, Akitsukuni carries out a Pearl Harbour-style attack against the Meisaani Navy somewhere to slow the movement of reinforcements, then launch the massive Banzai zerg rush attack that only a Japan/Russia combo like Aki can pull off through the small country and across Tenzan into Elwha. They would also invade Sisimut at this time. I don't know how successful you will allow me to be in Elwha but ideally we push it to the breaking point and may even conquer it half-fully like France. However, by this time the Allies have defeated Fusen and march across Uju to face Akitsukuni, also launching a D-Day invasion of Elwha, possibly, and eventually pushing back into Akitsukuni. However, shortly after the death winter hits and along with poor public sentiment, stretched supply lines and fanatic enemies, when Akitsukuni proposes a conditional surrender in 1941 the Allies accept. They get to control some stuff which I haven't thought of yet, but the entire city of Tokyo is one and there will be a Heian Concession too