Oneshit part 1!

I did this cuz im bored U.U.And this is a sehun x Oc fic.I just wanna make a added story/scenario in busted cuz i aint satisfied! U.U.I might do a reader x sehun one tho..Idk?
Sejeong has a friend that needs help!.A mysteriosu girl suddenly asked help because shes been thinking that a stalker has been stalking her/them!.And sehun knows one of the member?...Is this case really that simple?..