Alluvian is a gender in The Nadurian System, one of the four Nature Systems. It is a gender which is both connected to nature and its overall aesthetics but which has a specific and strong connection to rain. One may feel like their gender is specifically related to rain, or they may feel that a certain aspect of their gender can relate to certain aspects of rain. For example, someone may feel that their gender is related to rain if their gender feels drenched and pouring. Alluvian people can have any alignment and/or no alignment, and depending on what alignment they have, they could use another term from The Nadurian System to describe themselves. For example, an alluvian person who is fiaspec could say they're rhosynic alluvian, from rhosynian.