My One-Hit Kill Sister

My One-Hit Kill Sister (Japanese: 異世界ワンターンキル姉さん ~姉同伴の異世界生活はじめました~, Isekai Wan Tān Kiru Nee-san: Ane Dōhan no Isekai Seikatsu Hajimemashita, “One Turn Kill Sister in Another World: I Started Living in Another World with My Older Sister”) is a Japanese web novel series written by Konoe. The story follows Asahi Ikusaba, a high school student who is transported to another world after an accident. He initially hopes to use his knowledge of games and isekai stories to thrive, but quickly realizes his abilities are weak. Fortunately, his overprotective older sister Maya also arrives, possessing incredibly powerful cheat skills. The series revolves around the adventures and lives of the 'weakest' brother and the 'strongest' sister in this new world. The anime adaptation, produced by Gekkou, aired from April to June 2023. It blends comedy, fantasy, and isekai elements, exploring complex sibling relationships and the themes of survival and combat in another world. A manga adaptation has also been created, further expanding its reach.