[Outside of the world/heartthrob/multiple male protagonists/including some descriptions of losing SAN]
Nan Yu has become a minor supporting character in a science fiction novel. This is a world where silent "alienation" is taking place, and some monsters that look like humans but are not human are casting a terrifying shadow over the place. The only thing Nan Yu knew was that she would die at the hands of those monsters.
So she tried her best to stay away from them.
But things are getting more and more wrong. Paranoid eyes, sticky tentacles... Why was she entangled with those monsters? !