Short answers, pulled from the story.
The Kuril Islands were formed by the violent subduction of the Pacific Plate beneath the Okhotsk Plate. This geological collision created a landscape dominated by stratovolcanoes, with approximately 100 volcanoes dotting the archipelago and forty of which remain active today.
The islands were home to the Ainu people, who referred to the land as kur, meaning man. The name Kuril itself is derived from this indigenous autonym, though the Russians later adopted a name meaning to smoke to describe the perpetual volcanic plumes.
The Soviet Union invaded the North and South Kurils between the 18th and the 31st of August 1945. This military operation was part of a broader agreement made at the Yalta Conference in February 1945, where the Soviet Union promised to enter the Pacific War against Japan in exchange for South Sakhalin and the Kuril Islands.
The Kurilian Bobtail is a unique species that originated on these islands and has since been domesticated and exported to Russia. This wild cat has a distinctive short tail caused by a dominant gene mutation.
Admiral Isoroku Yamamoto ordered the assembly of the Imperial Japanese Navy strike force for the attack on Pearl Harbor in Tankan Bay, located on Iturup Island. The territory was chosen specifically for its sparse population, lack of foreign presence, and constant fog coverage.
A population of roughly 20,000 people live in three administrative districts on the islands. The islands are also a hub for economic development, with fishing as the primary occupation and plans for oil exploration and geothermal power generation.