Mutated Apocalypse: I Have a Horror Apartment

One day, a "visitor" passed over the Blue Star. Within a few days of his passing, all the lives that had watched him changed dramatically. Lin Qin is an apartment landlord. He also looked at the "visitor" for various reasons, but he did not change physically after being looked at. Instead, he gained a "system" that can be strengthened by adding points. Lin Qin looked at his [Rent Collection] skill and fell into deep thought. What should you collect as rent from your monster tenants this month?