Jinhyeok is probably in some limbo. The six pigs refers to each member of the family (whom also are his foster's home memories relatives). He can't kill them unless he uses the tools he used on his foster's relatives. He has to kill the dad with the iron pipe. The others have to be killed with the laptop (not quite sure how to do that though), blow darts, chain and mailbox (which we saw was sharpened). Blured pictures probably show his foster's parents murder. The sixth pig is either the young version of him or jinu. Jinu may be the idol true identity , but I won't bet on that.