Fool Night, Vol. 4 Yasuda Kasumi (2025)

In a distant future where thick clouds block the sun, plants wither and oxygen is scarce. To fight extinction, humanity has developed a technology that transforms humans into plants, providing a small amount of oxygen. As Toshiro Kamiya faces the choice between saving his family and saving himself, he must also question whether the process is sustainable or ethical. While Hourai recovers from Ivys brutal attack, Toshiro investigates the origins of the vicious spiriflor and is led to Paupertown. What will he discover in the dark and miserable depths of the town?