An undying love [Sangwoo X Reader] [Killing Stalking]

[Mature content] [Gore] #1 on the Koogi tag on 10/18/18 #6 in the Sangwoo tag on 12/20/18 (1/2 endings finished) (Hey guuuys!! This is my first X reader fan fiction so I'm hoping all goes well and you guys enjoy it!! Please ignore my terrible spelling and grammar XD ) After the disappearance of your best and only...