The identifier typically refers to Episode 41 of the original Inuyasha anime series (Season 1, Episode 41) or Chapter 41 of the manga. Anime Episode 41: "Kanna's Mirror"
In this episode, the main antagonist Naraku introduces a new incarnation to stop Inuyasha and his companions. Inuyasha: 1Г—41
: Episodes 1–167. This covers the majority of the quest for the Shikon Jewel shards. The identifier typically refers to Episode 41 of
: A 26-episode conclusion that adapts the final chapters of the manga with much faster pacing. Inuyasha: 1Г—41