I read this horror manga a while ago and I can't remember the name of it. I think only 3 chapters are out so far. Its about a young couple going to an amusement park and there, they went on the highest roller coaster expecting fun and game but at the highest point of the drop down from the roller coaster, it suddenly stop. The people riding there were told that this is a game of death. The last one left hanging on the hand rail will be save while the rest will fall to their death. I think at the end of the chapter only the little girl and her father were safe while every died. Does anyone know the title to this manga?