A central plot device in the anime and manga InuYasha, the fictional Bone Eater's Well is supposedly so called because it was once used to dispose of the bones of defeated yōkai. A scene from Cowboy Bebop (1998) Anime (アニメ) is Japanese animation, sometimes referred to in the Western world by the portmanteau Japanimation. ... Rurouni Kenshin manga, volume 1 (English version) Manga (漫画) is the Japanese word for comics; outside of Japan, it usually refers specifically to Japanese comics. ... InuYasha (Japanese: 犬夜叉, inu dog + yasha demon from Japanese yasha, derived from masculine Sanskrit yaksha) is a long-running manga and anime series by Rumiko Takahashi (creator of Urusei Yatsura, Maison Ikkoku, Ranma 1/2, and others). ... Yōkai (Often spelled Youkai, Japanese: 妖怪) (apparitions, spirits or demons) are class of creatures in Japanese folklore ranging from the evil oni to the mischievous kitsune or snow woman Yuki-onna. ...

In the series, the well can be used to magically transport a person and some amount of material objects from the modern era, where it's housed as part of a family shrine, to the Sengoku period of feudal Japan, apparently sometime around the 1550 A.D. on the Gregorian calendar, and vice versa—though for some obscure reason only InuYasha, the title character, and Kagome, the other central protagonist, seem to be able to go through it. The Sengoku Period (戦国時代 Sengoku jidai) or warring-states period, is a period of long civil war in the history of Japan that spans from the middle 15th to the early 17th centuries. ... InuYasha as portrayed in the anime series InuYasha (犬夜叉, Inu dog + Yasha demon) is the main character of the anime and manga series InuYasha by Rumiko Takahashi. ...