How does Joseph Permuat influence Taiyo's life?

After moving to Nasila, Taiyo falls in love with Joseph Parmuat, but cannot marry him because he is from the same clan. When faced with the decision of whether to marry Oloisudori and follow her father's wishes, she ultimately runs away to join Resian. Taiyo's choice comes at a steep price—the life of Joseph, who dies to save her.