Orange: Mirai S01

Hiroto Sowa, a 26-year-old, his wife Nahoko, and their old high school friends - Takako Chino, Azusa Murasaka, and Saku Hagita - gather on Kubo Hill to watch the cherry blossoms together. As the sun sets, they reminisce about their friend, Kakuro Naruse, who died 10 years ago. To mourn him, they decide to visit Kakuro's old home, where they had heard the secret of his death from his grandmother. Due to regret, Sowa and his friends decide to write a letter to their 16-year-old selves in the past to alleviate some of their guilt. The 16-year-old Sowa, with the knowledge he has gained from the letter about his future, has the chance to change his future. What decisions will he make? What will happen in this new future?