Orange (オレンジ Orenji) is an anime television series based on the slice of life romance shōjo/seinen manga series written and illustrated by Ichigo Takano. The series originally aired in Japan between July 3, 2016 and September 25, 2016, consisting of 13 episodes. The series began airing in North America on October 24, 2016 on FUNimationNow.
One day, Naho Takamiya receives a letter written to herself from ten years in the future. As Naho reads on, the letter recites the exact events of the day, including the transfer of a new student into her class named Kakeru Naruse. The Naho from ten years later repeatedly states that she has many regrets, and she wants to fix these by making sure the Naho from the past can make the right decisions, especially regarding Kakeru. What's more shocking is that she discovers that ten years later, Kakeru will no longer be with them. Future Naho asks her to watch over him closely.