General Introduction: My sister is a super popular female gamer, but I took her down with one blow yesterday. — Mystery Introduction: We still don't know what secrets are hidden in the games we played back then. — Hot-blooded Introduction: Who are you? Where are you? As long as there is a glimmer of hope, I won't give up! — Themes include different worlds, urban settings, science fiction, invincibility, and a perfect harem ending. The protagonist is somewhat silly and leans towards wild ideas. That's it. Harem! Harem! Harem! Not for those who dislike it! Original Novel Official English