Episode 37 (Hanyō no Yashahime)

Zero's Wish is the thirty-seventh episode of Hanyō no Yashahime, and the thirteenth episode of the second season titled "The Second Act".

Synopsis

 * 1) Towa has succumbed to her deepest fury and hatred, intending to destroy Zero! Setsuna comes to stop her with some crucial knowledge.
 * 2) Meanwhile, Sesshōmaru presents the Black Pearl to Moroha, revealing to the quarter-demon that her parents are alive and well from within.
 * 3) Kirinmaru pursues Akuru.

Summary
Now that Towa has tapped into the depths of her deepest fury and hatred and has allowed her demonic self to fully awaken, the utterly berserk Half-Demon Princess is set on putting an end to Zero once and for all. Things escalate further as Zero has regained even greater demonic abilities from absorbing all of her seven Rainbow Pearls into her eyes and is set on personally sending Towa to. Meanwhile, Kirinmaru sees Akuru and gives chase to make use of his pinwheel's extraordinary time-based abilities. As Moroha and Jaken arrive right outside the Sacred Tree of Ages and Bone-Eater's Well, Sesshōmaru finally hands the Black Pearl over to Moroha, explaining that his younger half-brother and his wife, her parents, are safe and sound within.

As Towa is about to cut Zero down, Setsuna arrives to help calm down her twin sister. With a Dream Butterfly she received from Rin, Setsuna and Towa see the truth of what happened in the forest. It turns out Towa never left Setsuna behind in the fire, and following their separation, Setsuna was left inconsolable before Rin and Jaken attached a Dream Butterfly to Setsuna to remove her memories of the fire and Towa to save her from the grief. Towa, who has now returned to her senses, and Setsuna tearfully embrace as they fully rekindle their bond as sisters. Towa thanks Zero for helping her realize the love she had in her life, but Zero, knowing Towa has no more reason to kill her, prepares to take her own life to kill Rin. Setsuna quickly sees a second connecting Zero to the spirit of the Great Dog Demon and severs it.

The deep regrets Zero held are revealed to be that she felt responsible for Tōga's death, and with the Rainbow Pearls shattered, Zero sheds tears once more. However, the Great Dog Demon's spirit consoles her and expresses his gratitude. Now at peace and ready to pass on, Zero severs the thread of fate connecting her and Rin before Riku tearfully stabs her. Zero tells Setsuna and Towa that Kirinmaru's hatred of half-demons comes from the fact that one such took Rion's life. She dies afterwards, hoping to see Kirinmaru in the afterlife. With Zero gone, the silver-scale curse is lifted and Rin is finally released of the Tree of Ages and wakes in the arms of her relieved husband.

Back at the Bone-Eater's Well, Moroha, who is determined and hopeful at finally getting to meet her parents ever since she first saw their incarceration in the Border of the Afterlife, is approached by Kirinmaru who promptly takes the Black Pearl from her before issuing her an ultimatum: Find and bring Akuru's pinwheel to him or she will never see her parents again!

Trivia

 * Towa and Setsuna reconcile as the latter's memories of her twin sister had finally returned in; Setsuna sheds tears for the first time.
 * It is revealed that Jaken had erected an additional demonic energy shield to keep four-year-old Setsuna safe.
 * Zero reveals that she was the true culprit behind the fire to Towa.
 * The demonic aura Towa projects takes on the form of her late grandfather.
 * The truth behind Zero's resentment towards half-demons comes from Rion's demise at the hands of a half-demon boy named Sakasa whose master/mentor Kirinmaru had killed.
 * Moroha receives the Black Pearl from Sesshōmaru, finally aware that her parents are very much alive. Unfortunately, Kirinmaru now holds Inuyasha and Kagome Higurashi captive by snatching it from Moroha.
 * It's been shown that Towa is completely aware of what happens when she transforms.
 * It was revealed that Rin was keeping Setsuna's girlhood memories safe as they were too painful for her to expierence at such a young age.
 * The clouds surrounding Sesshōmaru's mother's palace are seen, but she herself does not appear.
 * This marks the last appearances of the Dream Butterfly, Zero and her seven Rainbow Pearls.
 * Transparent World is played a final time when Rin is finally released from the fatal curse into Sesshōmaru's waiting arms.