The Island of Cats(ねことじいちゃん)

Daikichi is a 70-year-old man and lives on a small island. Since his wife died, he has lived with his cat Tama. Daikichi was born and raised on the small island and enjoys relaxing days with his childhood friends including Iwao and his cat Tama. Daikichi has a son Tsuyoshi who lives in Tokyo. Tsuyoshi worries a bit about his father living alone on the island, but Daikichi is content with his life. After his close friend passes away, Daikichi worries about his physical condition. His daily life begins to change. Based on manga series "Neko to Jiichan"