Episode 25 (Hanyō no Yashahime)

Wielding the Tenseiga is the twenty-fifth episode of Hanyō no Yashahime, and the premiere of the second season. It aired online at the second of October, one year after the spinoff anime had premiered in Japan.

Synopsis
During the Half-Demon Princesses' second battle with the Beast King, Kirinmaru, Setsuna ended up losing her life to him. Sesshōmaru, who appears before a deeply sorrowful and remorseful Towa, says "Whether Setsuna lives or dies depends on you" and hands over his broken Tenseiga. Just as she does with the Kikujūmonji Knockoff, Towa attempts to create a blade of light blue demonic energy. However, Tenseiga's pale blue energy blade does not grow as it is a sword that does not harm.

On the contrary, Towa's silver-white hair turns jet-black as she desperately attempts her very best efforts in transferring her inner demonic energies into the broken Tenseiga to return Setsuna to life. Amidst this, the demon swordsmith, Tōtōsai, creates a brand-new naginata from lapis lazuli quartz and volcanic soil, suitable for the gradual awakening of the Blood Blade on Setsuna's left arm, as a souvenir from the Underworld.

Plot
With Tenseiga having been broken by a spiteful Zero, Towa begins to infuse the heavenly healing sword with her limited amounts of demonic energy in order to revive Setsuna. Totosai and Jaken arrive at the scene, and Totosai states that he needs three whole days to mend Tenseiga. Unfortunately, by that time, Setsuna's vital essence will have been already sent to the Underworld, thus rendering the repaired Tenseiga powerless and that they have no other option but to rely on Towa's own demonic strength and will. While the still-hesitating Towa struggles to utilize Tenseiga's heavenly abilities to try and save her twin's spiritual essence, Totosai retrieves the hilt of Setsuna's broken naginata and begins to restore it to create the blood bade she inherited from being one of Sesshomaru's half-demon daughters- the Yukari no Takichri! This greater infusion of a blend of pure demonic/mystical energy attracts a mass of demons both living and deceased. Moroha utilizes her somewhat stronger and more effective spiritual powers (a feat that is directly due to Moroha no longer keeping the red Rainbow Pearl inside her shell rouge) to eradicate/purify a few dozen demons' all at once with one single arrow alone, with backup from Kiara, but the two are largely outnumbered by their fellows.

As the horde of demons' turn their attention to a concerned Sesshomaru and his unconscious twin daughters, the recently resurrected Setsuna awakes upon her name being said by her father, who fiercely holds her greatly advanced and upgraded naginata aloft, the Yukari no Tachikiri, and easily slays the demons, which Moroha and Kiara had not been able to do away with, in one single stroke. Sesshomaru then hands the broken Tenseiga to Totosai for its three-day mending, and leaves with Jaken.

Before departing himself on his demon-bull companion Momo, Totosai warns Setsuna to never let herself be murdered again as the Tenseiga can only return sentient beings, human or demon, to life only once. While Towa remains unconscious from having drained herself of all her demonic energy to resurrect her twin sister, Totosai instructs Setsuna on how look for a mystical Kyuyokon root from the two thousand and fourteen year-old Magnolia demon-tree Bokusenō to receive a proper demonic weapon for Towa, in place of the Knockoff Kikujomonchi that she has been foolishly wielding since her return to the timeline of her birth.

Characters in Order of Appearance

 * Towa Higurashi
 * Setsuna
 * Sesshōmaru
 * Moroha
 * Kirara
 * Rin (dream)
 * The Sacred Tree of Ages (dream)
 * Jaken
 * Tōtōsai
 * Mō-Mō
 * Yume no Kochō (true form debut)

Trivia

 * Clips from previous episodes were showcased at the beginning.
 * This is the first episode to use Reborn as its opening theme, and Transparent World as its ending theme. Also, it is the first two depict two minor cut-scenes rather than the title of said episode heard by Towa. Minor cut-scenes are used in the anime- Sailor Moon, its 2014-2016 reboot Sailor Moon Crystal. And also in the 2003-2007 French animated show Code Lyoko.
 * Towa wields the Tenseiga for the first time. The way her innate dog-demon powers temporarily disappear had happened to Inuyasha when he was at Mount Hakurei due to its strong spiritual shield purging anything or anyone demonic.
 * Setsuna is revived and her Kanemitsu no Tomoe is reforged into the stronger Yukari no Tachikiri.
 * No longer having the red Rainbow Pearl to limit their true strength and effectiveness against evil, Moroha's inherent spiritual powers are now free to further develop properly as well as increase in strength and effectiveness. (For instance, for a time, her sacred arrows could only display a very small amount of spiritual energy that could only wipe out and/or purify one target at a time. From this episode onward, it takes only one of Moroha's sacred arrows for a dozen or several more targets to be fully purified or eradicated all at once).