Onyeka's latest book "The Great Igbo Caste System (Drawing parallels with the Hindu Caste System)" is unique in the sense that he must be the first to have attempted to compare the Hindu Caste system with the Igbo caste. He builds the basic foundations of the book in the first eight chapters of the book by explaining the Igbo caste system and each individual caste and its position in the social hierarchy which would meant some serious research for authenticity.