Labyrinth
Ryo discovers he is not the true son of his supposed parents; his biological parents are no longer alive. Source: crunchyroll
Aired 26/10/2002EP 9 - Labyrinth
2002
Demon Lord Dante
While sleeping one night, Ryo Utsugi had a nightmare of monsters attacking him. One day he learns a mysterious power to let him hear voices and have visions of girls getting killed, but one night he hears the same voice.
(Source: Anime News Network)