Ichigo Takano’s time-travel manga series orange was first serialized in 2012 in Bessatsu Margaret manga magazine; it later appeared in Monthly Action. US editions were published in 2016.
Uncharacteristically late for school, Naho Takamiya defers reading the letter she received that morning. When she does read it, the contents are astonishing. The writer predicts that Naho will have slept in. They go on to inform Naho that there will be a new transfer student and that despite Naho’s comradely instincts, she and her friends (Takako Chino, Saku Hagita, Azusa Murasaka, and Hiroto Suwa) should not invite the stranger to accompany them that day.
Most astonishingly, the writer claims to be Naho herself, writing ten years in the future.
As many people might, Naho ignores the advice. Tragedy ensues.