Ahead of an April 10 broadcast and subsequent simulcast on Crunchyroll , the A Ninja and an Assassin Under One Roof stage event at AnimeJapan 2025 today announced three additional cast members for characters who will appear in the first episode, as follows: Yoshida voiced by Yui Ogura Fumiko voiced by M・A・O Michiru voiced by Kyoka Moriya Yoshida Fumiko Michiru Related: Ninja to Koroshiya no Futarigurashi Anime Reveals Premiere Date, Theme Songs in New Trailer Based on the manga by HundredBurger, Yukihiro Miyamoto ( Magia Record ) directs A Ninja and an Assassin Under One Roof at studio Shaft, with series composition by Fuyashi To ( March comes in like a lion ), character designs and chief animation direction by Kazuya Shiotsuki ( Assault Lily Bouquet ) and music by Ryunosuke Kasai ( Love After World Domination ). Crunchyroll describes the story: On the way home from school one day, Konoha Koga rescues Satoko Kusagakure, a ninja who escaped her village.