Fool Night is a dark science fiction manga set in a world where a mysterious phenomenon called "fooling" causes people to slowly transform into trees. The story follows several characters, including a woman named Towa, who intentionally undergoes the transformation to escape a painful past and finds solace in becoming part of a forest cultivated by a shadowy organization. Readers enjoy the series for its hauntingly beautiful and melancholic atmosphere, its exploration of identity, loss, and the desire for peace, and the ethical questions it raises about choosing a non-human existence.