jeongin has been you bf for 3yrs,one day while he is at work,you were in a library studying random books until you got interested reading this one book called "flower soulmate" it was a spell story where your soulmate will grow flowers when you get hurt and once his body grows full of flowers,he dies from the spell,once he dies,you will see a red string wrap around your wrist,you will get curious and follow it,not knowing the string is guiding where your dead soulmate is