Quagmire
Dadan's true origins are revealed; being Ryo's only weakness, Dadan kidnaps Ryo's sister. Source: crunchyroll
Aired 16/11/2002EP 12 - Quagmire

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)