Golden Flower: What Is Hidden Is the True Flower, What Is Gone Is the Butterfly (2009)

Nursing home "Yuyoso". Many lonely old people live there, including botanist Taro Makiso, a physicist, an actor, a bar mom, and a chef. Maki has spent most of his life studying botany, and has lived without regard for entertainment, drinking, women, or everything else in the world. Then came my 80th birthday. He and a young staff member go digging for wild yam and find a mysterious golden flower. It was the flower of immortality, the "Golden Flower", which was said to bloom beside the Himalayan Virgin, which he had been looking for for many years. From that day onwards, fragments of memories from his youth, which he had intentionally sealed off in order to immerse himself in botany, surged into Maki in a whirlpool.