"Some people have soulmates who are meant for each other to help each other. You might not even realize that they're your soulmate but the second you're struggling, they will come and save your life." His mom had once said. Her words were implausible. He didn't believe it then, but at the age of sixteen, he changed his mind, being proved otherwise. Maybe some soulmates were really made to save each other. Or, alternatively: When Changbin discovers that he has a soulmate, the last thing he expects is to be greeted with bubbly girl crush songs playing in his head. Oh, and the stranger in the alley, who seems to hide more than just the tears streaking down his face.