KittyMafu's manga / #Stalker(2)

So, kid finds himself a sugar daddy, but in the middle of it he breaks the relationship off. Then one day, her mom was planning to introduce the man she has been seeing to her son, which the man that he ends up being introduced is the 'sugar daddy'. He wants their relationship to end but things are not so easy. Ending: An obsessive guy keeps on bothering him, and sihyun was abt to be murdered but ends up killing his mother. All ends sadly...