My One-Hit Kill Sister

After rescuing a child, otaku Asahi Ikusaba is whisked away to another world, convinced he’s been reborn with the same overpowered abilities as his favorite game and novel protagonists. But when a deadly monster nearly kills him, he realizes he’s just as ordinary as ever. At his lowest moment, Asahi instinctively cries out for his overprotective sister, Maya-who suddenly appears, wielding the godlike powers he thought he had. Thrilled to reunite, Maya vows to shield her brother from any danger. Now, the inseparable siblings set out to enjoy their new adventure while searching for a way home. But their arrival in this world may not have been an accident. As the Demon King’s unstoppable army advances, it seems Maya alone has the strength to oppose them.