Love Letter from the future

When a lonely university student named Mira Tanaka receives a love letter mysteriously dated twenty-five years in the future, she laughs it off—until everything written in the letter begins to come true. As she continues to receive these letters, she starts making choices that change not only her future but the lives of everyone around her. But the deeper she gets into the mystery, the more she realizes someone is trying to manipulate fate—for a dark purpose.