After Time Travel: Captured by Monsters at the Beginning and Used as Experimental Subjects

Good news: Xu Yi has traveled through time and no longer has to work overtime for his boss. Bad news: I was knocked unconscious by a monster as soon as I traveled through time and was captured as a test subject. Wait, that doesn't seem so bad. This busy and bustling city is not a home for humans at all, but a lie carefully crafted by monsters. The classmates, family members, and neighbors around you who get along day and night may not be human at all. Human beings who are also kept in captivity will be harvested every 18 years of age. Xu Yi expressed that he would gather all like-minded partners to overthrow the monster's rule.