Orange is a Japanese romance manga series written and illustrated by Ichigo Takano, aimed at the shōjo and seinen demographics. The series follows high schoolgirl Naho Takamiya, who receives a letter written by herself ten years in the future. She is tasked with keeping an eye on Kakeru Naruse, a transfer student whose mother committed suicide on his first day of school. It was first serialized in 2012 in Bessatsu Margaret manga magazine and later in Monthly Action. It has been compiled into 7 volumes as of April, 2022. Its chapters are published online in English by Crunchyroll and in print by Seven Seas Entertainment. It is also published in France by Akata, in Poland by Waneko, and in Spain by Ediciones Tomodomo. A live action film adaptation of the same name was released on December 12, 2015. An anime television adaptation started to air in July 2016. A spin-off to the manga began serialization on March 25, 2016, in the Monthly Action magazine published by Futabasha. An anime theatrical film, titled Orange: Future, premiered in Japan on November 18, 2016.

Matsumoto is a city located in Nagano Prefecture, Japan. Matsumoto is designated as a core city since 1 April 2021. As of 1 March 2019, the city had a population of 239,466 in 105,207 households and a population density of 240 persons per km2. The total area of the city is 978.47 square kilometres (377.79 sq mi).