Pokemon Sun

The player has received a Greninja from Ash Ketchum and his living his Life on Mele Mele Island.
There, he meets Hau and Professor Kukui. They introduce him to the island and then fight together against Team Skull.
After that, the player is free to explore a little part of the map; there are some events that can be unlocked only after some days and usually are centered around Hau'oli people.