Towa receives the legendary cosmic sword Zanseiken from Kirinmaru's deceased daughter Rion, whose soul is contained within an artificial body created by her father. Setsuna has her Kanemitsu no Tomoe upgraded by Totosai into the mighty Yukari no Tachikiri, which can cut the invisible red threads of fate. During a battle with Kirinmaru at the ruins of Lady Izayoi's mansion, Setsuna is seemingly killed by Kirinmaru, but Towa uses the broken Tenseiga to revive Setsuna. At the same time, the unparalleled time-based unsurpassable entity is harboring adult Rin in suspended animation for her husband Sesshomaru because of her fatal connection to Zero, the elder sister of Kirinmaru and creator of the seven mystical Rainbow Pearls, whose respective mighty demonic abilities rival those of the Sacred Jewel of Four Souls itself. In order to restore them, the half-demon twins embark on an adventure, alongside their quarter-demon bounty hunter cousin Moroha, the fourteen-year-old daughter of Kagome and Inuyasha, who lacks knowledge of her parents except that her human mother is an uppermost-level priestess and that her equally impulsive father is a dog-demon/human hybrid.Īt times, the vital essence of the Sacred Tree of Ages awakens from centuries of dormancy to warn them that a long-standing rival of their paternal dog-demon grandfather is plotting to warp time itself, since Sesshomaru refuses to fight him directly in place of his late father. During their separation, Setsuna became one of the demon-slayers working with Kohaku and does not remember her past, as the mythical Dream Butterfly stole her dreams and memories.
Ten years later, Towa is reunited with Setsuna, when she leaves the modern era through the vast time-traveling power of the mystical Sacred Tree of Ages. Towa becomes close to her younger adopted sister, six-year-old Mei, who is Towa's “substitute” for Setsuna. Ten years after the events of Inuyasha, Sesshomaru and Rin's daughter Towa is separated from her twin sister Setsuna, and gets stranded in the modern era, where she is adopted into her paternal half-aunt Kagome Higurashi's family, raised by Kagome's younger brother Sōta and his warmhearted wife Moe. See also: List of Inuyasha characters § Yashahime: Princess Half-Demon main characters