Kemurikusa

In the ruins of a world overtaken by strange red growths, Rin and her sisters survive by relying on mysterious leaves known as kemurikusa. Their abilities help them fight the hostile insect-like creatures roaming the abandoned landscape, but every journey beyond safety raises new questions about the place they inhabit.

When the group encounters Wakaba, a curious young man unlike anyone they know, his fascination with the world clashes with Rin's caution. Together they begin moving through the desolate environment, where scarce water, dangerous creatures, and the secrets of the kemurikusa suggest that the sisters understand far less about their world than they believed.