Yashahime: Princess Half-Demon (Japanese: 半妖の夜叉姫, Hepburn: Han'yō no Yashahime) is a Japanese anime television series produced and animated by Sunrise. It is a sequel spin-off to the Inuyasha anime television series, which itself is based on Rumiko Takahashi's manga series. The series follows the adventures of Towa Higurashi and Setsuna, Sesshomaru and Rin's fraternal twin daughters, and Moroha, Inuyasha and Kagome Higurashi's daughter.

The series' first season aired from October 2020 to March 2021. The second one aired from October 2021 to March 2022. Viz Media has licensed the series in North America, while Medialink has licensed it for Southeast Asian and South Asian territories.

A manga adaptation, illustrated by Takashi Shiina, was serialized in Shogakukan's shōnen manga magazine Shōnen Sunday S from September 2021 to June 2025.

A decade after the final battle against Naraku, Sesshomaru and Rin's daughter Towa is separated from her twin sister Setsuna and becomes stranded in the modern era. She is adopted by the Higurashi family, raised by Sōta Higurashi, his wife Moe, and their daughter Mei. Years later, Towa reunites with Setsuna after passing through the Sacred Tree of Ages, discovering that her sister has become a demon slayer under Kohaku's guidance but has lost her memories due to the influence of the Dream Butterfly. Determined to restore Setsuna's past, the twins embark on a journey alongside their cousin Moroha, the daughter of Kagome and Inuyasha, who knows little of her parents beyond their identities as a powerful priestess and a half-demon warrior.

The Sacred Tree of Ages occasionally awakens to warn them of a looming threat—an ancient rival of their grandfather, the Great Dog-Demon, who seeks to manipulate time itself. Sesshomaru, unwilling to confront this enemy directly, remains distant while Rin is kept in suspended animation by a powerful time-manipulating entity. Her life is tied to Zero, the elder sister of Kirinmaru and creator of the Rainbow Pearls, whose powers rival the Sacred Jewel of Four Souls.

During a confrontation at the ruins of Izayoi's mansion, Setsuna is seemingly slain by Kirinmaru, but Towa revives her using the reforged Tenseiga, now named Yukari no Tachikiri, a blade capable of severing the threads of fate. Towa also inherits the Zanseiken from Rion, Kirinmaru's deceased daughter, whose soul resides within an artificial body. The twins eventually reunite with Rin after Zero lifts her curse, though Zero perishes soon after. Meanwhile, Kirinmaru forces Moroha to choose between rescuing her parents or seizing Akuru's time-altering pinwheel.

Sesshomaru and Kirinmaru resume their battle, with the former shielding the twins at great personal cost. Weakened, Sesshomaru sends them into the Black Pearl, where they encounter Inuyasha and Kagome. After escaping, they learn Kirinmaru's true goal: to travel to the Reiwa era and destroy the Grim Comet, a celestial threat to humanity, intending to rule over both humans and demons. Towa later realizes Kirinmaru allowed her to wield Zanseiken so he could eventually claim her body as a vessel for Rion, while Moroha receives a spiritually enhanced longbow crafted by her parents.

Using Akuru's pinwheel, the twins return to the modern era to confront the comet, pursued by Kirinmaru. They meet Osamu Kirin, Kirinmaru's former subordinate and Towa's teacher, who initially claims to share their goals but betrays them by transporting the comet to the feudal era. Akuru sacrifices himself to reopen the gateway, allowing the twins to rejoin their family and prevent the coming of the Degenerate Age.