Help me find this

So its a horror shounen ai manga i read about a year ago but i forgot its name... Its about two childhood friends who loved spending time together. They lived in a village that was near a forest. I think one of them was blonde the other had black hair. So the villagers would often warn the kids about wandering into this forest as there was something creepy about it. So one day the blonde boy wanders into the forest and doesn't come out. This sends the whole village into a search which lasted for abt 3 days. Eventually they find him and life goes on as normal. But the black haired guy realized that this blonde is not actually his friend but something that seems to have taken over his body and pretending to be him. It was pretty ominous and i remember getting shivers from time to time... Anyone know this manga?