The official website for the television anime adaptation of Konoe and Kenji Taguchi's Isekai One Turn Kill Neesan: Ane Douhan no Isekai Seikatsu Hajimemashita (One Turn Kill Elder Sister in Another World: I Began Living in Another World with My Elder Sister) manga revealed on Monday five additional cast members, the first key visual (pictured), and a teaser promotional video. The anime is scheduled to premiere in 2023.

Cast
Sophie: Azumi Waki (Yuusha Party wo Tsuihou sareta Beast Tamer, Saikyoushu no Nekomimi Shoujo to Deau)
Tanya: Rio Tsuchiya (Cue!)
Gloria: Sora Tokui (Watashi, Nouryoku wa Heikinchi de tte Itta yo ne!)
Kuon: Konomi Kohara (Mushoku Tensei: Isekai Ittara Honki Dasu)
Siegfried: Yuuma Uchida (Orient)

Hiroaki Takagi (Koi wa Sekai Seifuku no Ato de episode director) is helming the anime at animation studio Gekkou. Youhei Kashii (Battle Athletess Daiundoukai ReSTART!) is handling the series composition and Yuuki Hamada (Asagao to Kase-san. prop design) is designing the characters.

The comedy fantasy manga adapts Konoe's web novel, which they began writing on the Shousetsuka ni Narou website in December 2019. Taguchi began drawing the manga adaptation in Sunday Webry in March 2020 before restarting it in Sunday Gene-X the following month. Shogakukan published the eighth volume on August 12.

Teaser PV


Source: animate Times