"Ruoran recalls Ru, Ruoran recalls Yao, Ruoran recalls Xin, life after life, forever and ever, we will never be separated." This is the oath they engraved under the witness of the stars. As they grew up, they discovered that the world was never as beautiful as they imagined. Once Jin thought he was the person she loved the most and loved her the most, but now she realizes that the cause of all this was a joke bet; she once thought it was a safe haven in her life, but now she realizes that it is a bottomless abyss; what she once thought was absolutely correct, now has consequences that she regrets endlessly. Once... Now... When countless onces have become now, can they still abide by the oath witnessed by the stars? When will spring come after the storm?