Walkthrough: After selecting your Starter Pokemon, Professor Kukui will suggest heading to Iki Town just up ahead to meet the Kahuna of Melemele Island. After trekking through the Wild Grasses, you will quickly come to the entrance to Iki Town (especially since the other paths off of Route 1 will be presently blocked off). As you come to Iki Town, a trainer will come running your way, one with the name of Hau. After meeting Hau, he will be given his Starter Pokemon from Professor Kukui, always choosing the one that is weak against your Starter Pokemon. After he does, he'll suggest the two of you battle each other for your first official Pokemon Battle.
Hau (Rowlet Starter) - Level 5 Popplio
Hau (Litten Starter) - Level 5 Rowlet
Hau (Popplio Starter) - Level 5 Litten