According to the myth, it is said that the arrival of the first human on Nias island began in the days of King Sirao, whose nine sons had been banished out of Tetehöli Ana'a for fighting over the throne.
Menurut mitos tersebut, kedatangan manusia pertama ke Pulau Nias dimulai pada zaman Raja Sirao yang memiliki 9 orang Putra yang disuruh keluar dari Tetehöli Ana'a karena memperebutkan Takhta Sirao.