My One-Hit Kill Sister

After risking himself to save a child, otaku Asahi Ikusaba is whisked away to a fantasy world. Convinced he’s landed the kind of “cheat” powers he’s admired in games and novels, he charges ahead—only to learn the hard way that he’s still painfully ordinary when a fearsome monster confronts him.

In desperation, Asahi calls out for his sister, Maya, and she suddenly appears with the overwhelming strength he expected for himself. Thrilled to be reunited, the fiercely doting Maya vows to keep Asahi safe at all costs. As the siblings settle into their strange new circumstances and search for a way home, their arrival begins to look less like an accident—especially with the Demon King’s formidable army closing in and Maya standing as the one person capable of stopping it.