The odd item in the list is "Twelfth Night."
"Raisin in the Sun," "Ozidi," and "The Concubine" are all works of literature that originate from African American, African, and Nigerian cultures, respectively. "Twelfth Night," on the other hand, is a play written by William Shakespeare in the early 17th century and belongs to the category of English Renaissance theatre. While all the other items belong to non-Western cultures, "Twelfth Night" belongs to Western culture.