Unable to Equip Weapons, I'm Just an NPC

This work contains Feng Aotian, a villainess heroine, pure love, Demon Kings and heroes, yanderes, chuunibyou, succubi, human experimentation, gore, mechs, male characters, wars between races, and science fiction.

I was a shut-in otaku, but somehow I was reborn in another world, and now a demon girl is all over me?

The truth of the world? People's happiness?

I just want to be a slacker and coast through life.

Really.