My One-Hit Kill Sister

Asahi Ikusaba is sent to an other world as a result of an accident that occurs in the real world. He attempts to take pleasure in the novel environment he created, but his skills are the least strong. Asahi's adoring older sister Mayu saves him just before he is going to be attacked by a ferocious monster. Mayu, who was pursuing Asahi's affection, also found herself in the same world as him while possessing the most powerful skills and cheats. The fantasy story of the eldest sister who is the strongest and has a brother complex and the younger brother who is the most incompetent begins.