the Donetsk People's Republic

a land, a large place / a country in general, a region / a country as in a nation, a state

national / country

Kyūjitai form of 悪夢 (“nightmare”)

(rare) a female given name

to have a dream

daydream

trance, dreamy state of mind

(idiomatic) sweet dreams!

Revealing that the entirety of a fictional story was all part of a dream the protagonist had; the "it was all a dream" ending.