Autumn 2023. Akutsu, an elderly inmate serving a life sentence, is on the brink of a solitary death in his single cell. A touch-me-not flower, capable of speaking like a human, tells him, "What a rotten life you had." Through their "conversation," Akutsu begins to reflect on his past. Summer 1986. Akutsu lives with Nana, a woman six years his junior, and her son Kensuke in a dilapidated apartment featuring a garden filled with touch-me-nots. A dying yakuza's one-night triumphant return, and the tale of his family as told by a flower blooming in prison.