Kensuke's Kingdom Response #1

What is point of relationship between Michael and Kensuke?
Both Michael and Kensuke hated each other before the happen. Michael was injured by large jellyfish and he was almost die. However Kensuke helped and saved him. Not only Kensuke helped him but also he took care him until he wake up and better.
Kensuke said "I was a good doctor" in chapter 7, when he talked about his back ground. In addtion he took care a lot of people who baby to old people. If he wasn't a doctor, Michael died because he got better because of Kensuke's skill. He already had good skill of doctor. For example, how to take care injure oerson, what is best way of hear body, and more something. He had good knowledge for injure person get better. After Michael better, they became a friend. Michael apriciated to Kensuke so much. If Kensuke didn't know that how to save Michael, he died. It means story is end, no more, and no more continue. This is author's message, I think. Author made character who Kensuke was a doctor before for these people become friend in small and quiet island.