Abandoned

A little boy in his early teenage years used to live with his family in a coastal city of an small island. An island which was often called 'The Neverland' in many myths. Although, the island wasn't quite connected with the outside world because of it's difficult location, right in the middle of Atlantic ocean, away from any other main land, people of the island used to live happily on their own. Until out of no where, some deviating things began to happen among the only city of the island.
Then soon after, one day the boy suddenly discovered that most of the people of the city including his family had gone missing while the rest of the people had turned monstrous and hideously violent. He spared no effort to find his family and someone normal in the city but it was all futile. It was like he was the only sane person alive on the island. At long last, the boy surrendered and accepted the painful reality and started to survive and fight for his life on his own.
Will the boy keep on living this nightmarish and lonely life just like that? or will he encounter a companion along the way who will turn things upside down one day?