Orange. Volume 1

At the beginning of her second year of high school, Naho Takamiya receives a letter from her future self. It says: «I don't want you to repeat my mistakes.»
About the cycle
One day, high school student Naho Takamiya receives a letter... from her future self. It says: «I don't want you to repeat my mistakes.» The letter accurately predicts all the events and asks her to prevent a tragedy related to a boy named Kakeru Naruse.
 
For example, the letter asks Naho not to invite Kakeru to hang out after classes, but she doesn't listen and invites him anyway. During their walk, the boy's mother commits suicide. According to the mysterious letter, Kakeru will also take his own life.
 
Kakeru and Naho grow closer, and she increasingly wants to change the future in which Kakeru is no longer there.