Episode 18 (Hanyō no Yashahime)

"Sesshōmaru and Kirinmaru" is the eighteenth episode of Hanyō no Yashahime.

Summary
Towa and Setsuna find Moroha, and the cousins get ready to annihilate Konton and Tōtetsu once and for all. They manage to succeed, and Lord Kirinmaru finally appears before the Half-Demon Princesses, as does Towa and Setsuna's own father Sesshōmaru. Do have they have the stomach to go through with what the Sacred Tree of Ages has requested of them to save all of time, even if its taking down Sesshōmaru?

Plot
Towa and Setsuna are able to kill Konton, who refuses up until he was killed to reveal Kirinmaru's whereabouts, and with the spell dispelled, they help Moroha swiftly overpower Totetsu, who flees to Kirinmaru's ship to lure them to be killed by Kirinmaru. Kirinmaru finally appears before the three as he drives Totetsu off. With Kirinmaru unperceptive to Towa's attempts to solve matters peacefully and return Setsuna's dreams, the three half-demons fight Kirinmaru but are quickly outmatched as Moroha is knocked out after failing to overcome Kirinmaru with the full power of her demonic blood and Towa and Setsuna subsequently being easily defeated by Kirinmaru.

Sesshomaru arrives and fights Kirinmaru to protect his teenage twin daughters, the shockwaves of their clash knocking out Towa and Setsuna and shaking all of Heaven and Earth, as Kirinmaru decides to spare Towa and Setsuna but reminds Sesshomaru they still need to work together, Sesshomaru subsequently leaving with Jaken. This leaves Towa, Setsuna and Moroha confused, as Towa especially wonders what her father's true motives are. Moroha tries to get the essence of the Sacred Tree of Ages to emerge, but is unsuccessful as the impossible time-surpassing entity shows the slumbering teenage Rin within it.

Trivia

 * The Half-Demon Princesses encounter Kirinmaru for the first time. Towa and Setsuna also meet their father Sesshōmaru as he appears to protect them from Kirinmaru.
 * Even though Sesshōmaru was stated to have surpassed his late father when he instinctively created Bakusaiga from his own body, Kirinmaru proved able to fight equally with him, despite him being stated to only be equal to Tōga in strength. As the two are formidable beast kings, their battle is such that all of the Earth and Heavens themselves quake whenever they clash as they are naturally equally matched.
 * The connection between Kirinmaru and the Dream Butterfly is that if Lord Kirinmaru is slain, then the Dream Butterfly will disappear.
 * Konton dies in this episode, making Tōtetsu the only remaining member of the Shikyō.
 * The Rainbow Pearls are revealed to been, in fact, seven fragments of an ancient and even greater demonic power that was divided by none other than Zero, for being way too dangerous to ever use to its fullest potential. This ancient supreme demonic power seems to be coveted secretly by Riku, as he has expressed a desire to attain all seven pearled fragments for himself.
 * Jaken expresses how Towa and Setsuna have grown, who naturally do not know he their father's longtime most devoted vassal.
 * Riku takes the blue Rainbow Pearl from Konton's headless corpse, further strengthening his natural abilities once adding it the purple and green Pearls had attained from Kyuki and Juybei. This leaves only the orange one Totetsu had just swallowed, and the red, gold and silver pearls in the possession of the Half-Demon Princesses, in order for a great demonic power to be revealed.