World One: A Certain Magical Index, A Certain Scientific Railgun
I transmigrated, damn it! Why am I a vessel for the core of the Tree Diagram? Why am I even more unlucky than Kamijou Touma? At least give me a Hand of the Harem! What? I don't get one of those either? Fine, then I'll just live in a negative world. I can sum up my whole life in one sentence: Science, you died a glorious death! Host... System! Why are you back again!
This novel and its characters are entirely fictional. Any similarities are purely coincidental. Do not imitate.
