Osu caste system

The Osu caste system was a traditional practice in Igboland, characterized by social segregation and restrictions on interaction and marriage with a group of individuals known as Osu (Igbo: outcast). The Osu individuals historically were marginalized by the Igbo deities (Alusi), and as a result, they are often perceived as inferior and segregated from the Nwadiala or diala (Igbo: real born) class.