Sora, a young man burdened by the profound regrets of a misspent high school life, finds himself in a desolate future where his dreams are unachieved and college is out of reach. One ordinary day, while lost in thought and despair, he makes a wish that inexplicably sends him back in time. Now, granted an extraordinary second chance, Sora is determined to rectify all his past mistakes, with one of his main goals being to mend and cultivate his relationship with Himawari Tachibana, the girl he recognizes as the love of his life.