Yoshiki and Hikaru have been friends since they were small, as the only two children around their age in the village. One summer though, Hikaru goes into the forest and comes back… different. He looks like Hikaru and has Hikaru's memories, but he's not him. Yoshiki, unsure what to do, decides to embrace the creature wearing his friend's face because even a fake is better than Hikaru simply being gone. But when weird things keep happening around the village, it may not be so easy to pretend that nothing has happened.

[Source: Anime News Network]