Untamed Entei and Horrible Hakudoshi
Naraku's child Hakudoshi kills Rygokoki, takes his weapon and earns the right to ride on the legendry horse demon Entei
Aired 16/02/2004EP 142 - Untamed Entei and Horrible Hakudoshi

2000
InuYasha
Kagome Higurashi, an average ninth grader, gets pulled into an ancient well by a demon, bringing her 500 years in the past to the feudal era. There, she meets Inuyasha, a half-demon who seeks the Shikon Jewel to make himself a full-fledged demon. With Inuyasha and new friends, Kagome's search for the Jewel of Four Souls begins...
(Source: VIZ Media)