The protagonist in the story accidentally returned to his school days, and started a series of operations in order to prevent his past wrong choices from affecting his future. In order to change the ending between himself and her, in order to stop himself from having regrets, he reversed the overall situation. But will everything really go smoothly? Or is there some unknown crisis waiting for them. Even if you know what will happen in the future, if you make some changes, will it definitely change the outcome? Please look forward to it...
