Survival Black Landlord: My Tenants Are All S-Class Spooks

(Infrastructure, survival, weirdness, black landlords, time travel, slave owners, partial numericalization, various monster worlds (including the genre) "Welcome to Evernight." "Here, you will have two identities, and your previous identity will be useless." "Identity 1: Tenants. Tenants will have special abilities suitable for survival to help you survive in this world. However, you do not have your own home and need to rent a house from the landlord." "Identity 2: Landlord, the landlord will own a variety of different buildings, divided into F level ~ SSS level. Different buildings have completely different defense attributes, but the identity of the landlord is rare, about... One in a thousand." "Attention, monsters will be refreshed outside every day, and monsters will attack the community. Landlord, you have to protect your community... To attract more tenants." "Tenants are an important source of income for landlords. Without tenants, you will soon die due to lack of resources."