(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.

daydream

trance, dreamy state of mind

(rare) a female given name

(Internet slang, derogatory) talking about oneself whenever possible; self-centered

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

the path of dreams / (by extension) dreaming

(history) Dream of the Red Chamber

Kyūjitai form of 紅楼夢: Dream of the Red Chamber