Yamato Takao is a 21-year-old adult who gets blessed with the power to be able to go back in time to whatever point of time he wants and change it in his young age. Plus, he has the power to possess a person's body and control it from within and the power to create weapons whenever it's necessary all through his mind- but all of this doesn't mean that he's lucky for life. In every new timeline, he creates a new trouble coming to face him. Sora anno- is a young adult in the age of 18 who only just entered into adulthood, in her highschool days she was an example of what you would call a 'perfect student ' Loved by everyone and admired by everyone but one day she faces a close 'death' experience when her home gets burned down but while trying to save her little brother . She gets help by a mysterious power that give her the ability to copy a person appearance and be 'them' and to copy other's skills and to multiply.  there are more players in this game tho, every player is changing the world and their future as well { ' Unpredictable future '}  Who will receive the happy ending they want ?