My friend is not a human!

Karry, Roy and Jackson were best friends, they were friends since young. One day, Karry and Roy saw Jackson went into a door and disappear. By the time they realise, no one was in there except for them! Where did he go? Gone? How is this possible? Find out more in《My friend is not a human!》and see what they discovered along the way. Jackson did not disappear for no reason,it is about an incident that happen in their school a long time ago......