Ghost System (2002)

Ghost System 2002 / ゴーストシステム 2002 / Gosuto shisutemu

After receiving a cryptic message from a long-missing friend, Misako and Wataru go searching and stumble across a large abandoned facility deep within the forest. Inside they discover a research project gone berserk, tearing down the barrier between the world of the dead and the world of the living.