The narrative follows , a happily married couple whose lives are upended by an unexpected workplace catastrophe.

Public reception to the series reflects the inherently polarizing nature of its genre. Viewers who strictly dislike netorare themes generally find the plot distressing and difficult to watch. Conversely, fans of psychological drama praise the title for its crisp animation quality and its uncompromising commitment to depicting a slow, tragic downfall without resorting to a sudden, unrealistic happy ending.

Unlike Takeda's manga, which uses the night-blooming metaphor to explore themes of , SEKAI NO OWARI's song uses it to represent the experience of unreciprocated adoration —waiting in the darkness for someone who will never notice you, like a flower that blooms at night when no one is watching.

In Japan, the phrase has become a popular cultural reference, often used to describe the fleeting nature of life, the beauty of impermanence, and the importance of appreciating the present moment.

"I will bloom when I choose, not when nature commands."