Episode 3 (Hanyō no Yashahime)

The Dream Butterfly is the third episode of Hanyō no Yashahime.

Synopsis
To be added

Summary
In the modern, Moroha tells Towa that her sword broke because it was ordinary, but Towa manages to use the Silver Rainbow Pearl's power to convert the remains into a laser blade and damage Mistress Three-Eyes. Setsuna finishes her off and she and Moroha recover their Rainbow Pearls. Towa tries to get reacquainted with her twin sister, but Setsuna does not remember her. Moroha deduces that the two are the daughters of Sesshōmaru, but neither of them know who that is. In the Feudal era, Kaede tells Hisui and Kohaku that Setsuna is Sesshōmaru's daughter. They found Root Head's roots around the Tree of Ages and deduce that Setsuna and Moroha were sent to the future.

Meanwhile, а minor demon called Hitokon possesses Towa and has her attack Setsuna. After a brief fight, Hitokon jumps into the body of Towa's adoptive sister, Mei, but Setsuna exorcises it. Mei with her parents allows Setsuna and Moroha to stay with them. Sota and Moe also recognizes Moroha as Kagome's daughter. Moroha deduces that Setsuna was cursed by the Dream Butterfly to be unable to sleep or dream and had her memories of her past erased. Towa is struck with guilt, believing she could have prevented this if she did not get separated from her ten years ago.

Trivia

 * Kaede reveals that the Bone-Eater's Well stopped working more than fifteen years ago. Since this well stopped working after the final return of Kagome Higurashi to the Feudal era, this means that Hisui must now be no more than sixteen years old.
 * The episode reveals that Moroha somehow knows about Sesshōmaru's paternity, but has no idea that he is her half-uncle, Inuyasha and Kagome are her parents, and Towa and Setsuna are her half-cousins. The twins also don't have information about their roots for unknown reasons, and Towa didn't even know the term "half-demon" until this day.
 * It turns out that Setsuna has completely forgot her past after the mysterious fire that separated her from Towa. Moroha also reveals that her half-cousin is under the curse of the Dream Butterfly that has consumed Setsuna's dreams and taken away her ability to sleep. However, it is not yet known whether these two events happened to Setsuna at the same time or not.
 * The origin of the Bone-Eater's Well is revealed, it was made from the wood of the Sacred Tree. That's why this well once have allowed time travel. This is also the first time this has been confirmed in the anime from the franchise's creator, as this information about the well was previously only reported in the first InuYasha movie.
 * Kohaku reveals that the Sacred Tree is also called the Tree of Ages. Not to be confused with the other tree of same name that Menōmaru once used.