Who is Porourangi?

Porourangi is the eldest grandson of Koro and the elder brother of Rawiri, Porourangi is the chosen successor for his generation. Because of his status as eldest, he is the default choice for leadership after Koro passes away. As a result, Koro spends a lot of time training him and bringing him along on trips pertaining to Maori legal and social issues. He is the father of Kahu, thus making Kahu the eldest child of the successor -- a fact which eventually forces Koro to question his opposition to female leadership in the group.