He is a young boy who was sent to the clan of Umuofia as a tribute. Why? In a book in a way like this people tried to prevent war between clans. Boys used to live in his new clan for three years. Guess who took a boy to his house? Okonkwo. He looks at the boy like on the son, and this boy becomes a close friend and brother to all main hero’s children. Ikemefuna even called Okonkwo his father. But nothing can be good for long. Once tribe decided to kill him and in order not to look weak as his father, he takes part in his killing.
Ikemefuna in the Essays