The Demon of the Ocean

Jojo and Oli play with an Ouija board

Jojo and Oli go in a house for vacation,its next to the ocean.They arrive and Oli takes out an ouija board.Oli says"오빠 I want to talk to my dead cardboard 남자친구 Jimin".
Two weeks ago cardboard Jimin was found dead in the bathtub.
Oli thinks it was an accident,but in reality Jojo killed cardboard Jimin because he was envious.Jojo wanted to be Olis boyfriend but Olis boyfriend was cardboard Jimin so cardboard Jimin had to die.Jojo filled the bathtub with water and acetone and put cardboard Jimin inside so he dissolves.
Jojo and Oli are using the ouija board.Oli says "Oli eh oh is here a ghost who wants to talk with us?Are you here cardboard jimin 오빠?" The planchette goes to yes.When they are done,Oli forgets to say goodbye and takes his fingers off the planchatte.He forgot the most inportant rule and now what they summoned will stay in the house.At first Oli is happy because he thinks that he is reunited with cardboard Jimin but they notice that this is not the ghost of cardboard jimin.Weird things happend,all their seafood is gone and they hear a weird voice but cardboard Jimin didnt talk or eat.They talked to something else that acted like it was cardboard Jimin to get their trust and now its in the house and tries to kill them.Jojo wants to go home but they cant get out all doors and windows are locked.At night they are talking about how to get away and things like that and then at 3am they hear a loud noise behind them like if someone dropped an octopus.They see nothing and then they are turning back a demon stands infront of them.

It says "Im Ssoyoung the demon of the ocean and I want to eat this weird fish that summoned me and his friend Jojo.I will start with the feet because I like it when my food dies slowly and in pain"
She gets really big and eats Oli and Jojo.

There is a second part of this,the name is "Jojo Spotlight the Rokurokubi"