Yuki Yuna is a Hero is a Japanese anime television series directed by Seiji Kishi and produced by Studio Gokumi. The series follows a girl named Yuna Yuki who, along with her fellow members in her school's Hero Club, becomes an actual hero tasked with fighting an evil race known as the Vertex. The series was broadcast in Japan from October 16 to December 25, 2014 and was simulcast worldwide by Crunchyroll. In North America, the series is licensed by PonyCan USA, and it was released on Blu-ray/DVD in April 2015. The opening theme is "Hoshi to Hana" (ホシトハナ Star and Flower) and the ending theme is "Aurora Days"; both are performed by Sanshū Chūgaku Yūsha-bu (Haruka Terui, Suzuko Mimori, Yumi Uchiyama, Tomoyo Kurosawa, and Juri Nagatsuma). The ending theme for episode four (acoustic version) and episode nine is "Inori no Uta" (祈りの歌 Song of Prayer) by Tomoyo Kurosawa.
A second season began airing in Japan from October 6, 2017 and is being simulcast on Amazon's Anime Strike service. The series is divided into two parts; The Washio Sumi Chapter, which adapts the prequel light novel series, Washio Sumi is a Hero, and was also released as three films between March 18 and July 8, 2017, and Hero Chapter, which is a sequel to the first series. For The Washio Sumi Chapter, the opening themes are "Sakiwafu Hana" (サキワフハナ) for the film version and "Egao no Kimi e" (エガオノキミへ A Smile Towards You) for the television version, both performed by Suzuko Mimori. The ending themes are "Tomodachi" (ともだち Friends) by Mimori, Kana Hanazawa, and Yumiri Hanamori for the first film, "Tamashii" (たましい Spirit) by Hanamori for the second film, and "Yakusoku" (やくそく Promise) by Mimori and Hanazawa for the third film. Three short films by W-Toon Studio based on the Yuki Yuna wa Yūsha-bu Shozoku spin-off manga by Takahiro and Kotamaru were released alongside the Washio Sumi films.