Episode 22 (Hanyō no Yashahime)

The Stolen Seal is the twenty-second episode of Hanyō no Yashahime.

Synopsis
Lady Zero disguises herself and approaches Miroku, whom she traps and undoes the sacred seal he himself had placed on Setsuna to render her demonic blood dormant. This predicament causes Setsuna to turn full demon with red eyes and butterfly wings and to go utterly berserk. She recognizes Lady Zero as the one who had entered her mind while she was dreaming a decade ago. How will Towa and Moroha stop Setsuna from destroying them and everything else?

Plot
Around 500 years ago in the Heian Period, at the palace of Sesshōmaru's mother's where she and Zero were waiting as Tōga and Kirinmaru are destroying the Grim Comet. Tōga watches Kirinmaru sleep until he has a conversation with Zero and the way of seeing Tōga saying to Zero it doesn't matter where things lead or the end that is expected but one is who it is that Zero wonders who she is. In the present, Zero disguises herself and approaches Miroku, whom she traps and undoes the sacred seal he himself had placed on Setsuna to contain her demon blood and dispels it. Towa wonders about the hug that Riku gave her, Setsuna needs to sharpen her weapon and she lost her edge to what Moroha is about to help but without getting her to sharpen.

Kirinmaru was later seen in the office of his ship as he touches the scar Towa had inflicted on him when Zero entered the room. Zero talks with Kirinmaru and asks him about his injury saying that if it was the cause of the princesses. Kirinmaru admitted it was the half-demon princesses who gave him that wound but stated it was hardly an entertainment for him that couldn't fulfill the prophecy, calling them pups who have yet to grow their fangs fully, and requested her to not attack the Half-Demon Princesses, wishing to wait for them to grow more and telling her not to get too carried away. Zero decides to go for a walk and do her things than Kirinmaru, who says do not get carried away by things and he knows the power of them are sealed, and revealed that not only the quarter demon Moroha but the half-demon sisters powers have also been sealed away when Kirinmaru tried to dismiss it as Moroha was only using the power of the Great Dog Demon to go wild and hadn't mastered it, believing at their full power even Kirinmaru wouldn't be able to get away unscathed, before leaving.

Seeing that Moroha could not sharpen Setsuna's weapon they decide to go with a better expert to do it, Towa runs into Zero who is seen selling apple not arouse suspicions taking advantage of a good moment to control Towa so she can grab Setsuna and Zero take advantage of breaking the seal, Moroha was determined to end her but Zero mentions that if she does it too Towa would happen that is directly linked to her but also her mother Rin. Zero uses Towa to break the seal, making Setsuna losing control of her powers and begin a rampage.

Kin'u appeared, which she is surprised at her father's way of training and jokes with him, Setsuna feels great anger over Zero. She is the culprit of everything and she was the one who observed her in her dreams, Moroha faces Zero she sees how superior she is, she easily removes her techniques and decides to leave better, she had to see how to calm Setsuna.

Moroha goes in pursuit in her own demon state as Beniyasha and manages to be at her level for the moment, but Setsuna surpasses her easily. Sesshōmaru and Tōtōsai react to Setsuna's stronger demonic power, Kin'u could try to seal her but she needs someone to hold her and watch. Towa decides to do it and Hisui admires what an older sister is not like a certain older sister that she knows by making Kin'u angry.

By their instructions, Towa manages to retain the best she can to Setsuna and making her come to her senses despite that she hurt her, long enough for Kin'u to restore the seal and have Setsuna recover her senses. However, the seal did not contain Setsuna's demonic blood completely and she swears to take revenge on Zero for what she did. Zero came to the ruin of Lady Izayoi's mansion where the Great Dog Demon had fought Takemaru. Meanwhile, in the modern era at the top of the airport, Towa's teacher notices the Grim Comet approaching again before having an encounter with Sōta and his young daughter Mei who are waiting for Moe.

Trivia

 * Kirinmaru has a scar from his first confrontation and fight with Towa in Episode 18.
 * Tōga's statement to Zero about her being who she is acts as a callback to what Towa said to Riku in the previous episode.
 * Rin is revealed to be linked to Zero, which could explain Sesshōmaru's inaction when Zero had the forest his daughters were in burned.
 * Setsuna sprouting butterfly wings seems to be a side-effect of the Dream Butterfly's curse.
 * Setsuna vaguely recalls seeing Zero's green eyes before, while she had slept and dreamed a decade before.
 * This is the first time that Sesshōmaru's mother, in her humanoid form, makes an appearance other than of Episode 9 (FA) via flashback. Plus, she is seen wears the Meidō Stone, while she and Zero waited as Tōga and Kirinmaru are going to destroy the Grim Comet.
 * This is the first time that Tōga, in his humanoid form, makes an appearance other than of the third movie via a flashback. Plus, he is seen to have wielded the mighty demon sword Sō'unga. The only difference is that its immense destructive power was not used to destroy the Grim Comet.
 * This marks Kin'u's first appearance in the present as a teenager, whom Towa naturally mistakes her Gyokuto, as they are identical twins.
 * Moroha uses Heavenly Arrow Barrage for the first time since Episode 16.
 * This is the first when Setsuna turns into a full demon, a crescent moon appears on her forehead.

Error

 * Tōga cast a complete Meidō Zangetsuha with Tessaiga despite the fact that Tenseiga, which can be seen, was created to contain it and was entrusted to Sesshōmaru to perfect it since it was implied Tōga was unable to master Meidō Zangetsuha.
 * Myōga stated Tessaiga was created as a means to protect Izayoi. The flashback took place 500 years before the series, which would mean it happened nearly 300 years before Inuyasha's birth and that Izayoi was not yet born, so Tessaiga and by extension, Tenseiga should not have existed yet.

Episodi 22 (Hanyo no Yashahime)