Born and nurtured on gentle flowing rivers and tranquil ponds, the fuyōren are sentient, mobile plants innately harmonious with the natural world. Fuyōren societies nestle within ecosystems effortlessly, acting in synchronicity with the ebb and flow of the world around them. A society might exist on the same plot of land for millennia, yet remain undetectable to outsiders who pass through, with nary a tree uprooted or stone upturned to indicate the fuyōren’s presence.

Bound to nature, the fuyōren bear an imprint of the world at the time of their birth. So-called “winter warriors” are fuyōren born in the bitter, colder months, and are believed to bear an aggressive, steely disposition. Fuyōren born in spring are blessed with a childlike, optimistic disposition, while summer fuyōren are typically charismatic, and autumnal fuyōren are said to be wise. Whether these stereotypes are true or merely a product of a cultural myth manifesting itself in the way fuyōren are raised is unknown.

"Even in tales of triumph, her stories left me with an aching melancholy—a yearning for meadows, lakes, and young grass trembling in a spring breeze. That is what it means to be fuyōren."
— Ryoko

Kaiju are feared and worshipped by the fuyōren for their power to obliterate swathes of an environment through their presence alone. Many fuyōren cultural traditions include dances, festivals, and ceremonies which aim to placate such behemoths. Bolder fuyōren may actively seek rampaging kaiju, drawing them away from societies and fragile ecosystems and into the untamed wilderness, usually at the cost of their own lives. Bakuryō and other kaiju that do not interfere with the natural world are revered by the fuyōren, while Raiko and other chaotic beings of wanton destructive force are hated and feared.