The Traps of Castle Dracula
Loki must go into a vitural reality game to save his friends that are stuck inside. The game taps in the players subconscious and use the people close to them. Enemies in the game are destroyed by destroying the red jewel that they wear. In the end a monster from the world of the Gods was in control. He defeated it and they were back to reality.
Aired 21/06/2003EP 12 - The Traps of Castle Dracula
Mythical Detective Loki Ragnarok
Loki, the Norse god of mischief, has been exiled to the human world for what was apparently a bad joke. Along with being exiled, he's forced to take the form of a child. He's told the only way he can get back to the world of the gods is if he can collect auras of evil that take over human hearts, and so to do this he runs a detective agency. Loki is soon joined by a human girl named Mayura who is a maniac for mysteries, and she soon helps out in her own way. However, soon other Norse gods begin to appear, and most have the intent to assassinate Loki for reasons unclear.
(Source: Anime News Network)