Survival Landlord: My Tenants Are All S-Rank Haunts

(Infrastructure, survival, the uncanny, black-hearted landlords, everyone transmigrates, slave owners, somewhat numbers-focused, a world combining strange settings, including Lovecraftian elements)

"Welcome to the Eternal Night."

"Here, you will have two identities. Your former identity will no longer matter."

"Identity 1: Tenant. Tenants will gain supernatural abilities suited to survival, helping you fight and survive in this world. But you won't have a home of your own, so you'll have to rent from a landlord."

"Identity 2: Landlord. Landlords will own various buildings, ranked from F to SSS. Different buildings have completely different defensive properties. But landlords are rare, with a probability of about... one in a thousand."

"Warning: Monsters will appear outside every day and attack the residential compounds. Landlords, you must protect your compound... to attract more tenants."

"Tenants are a landlord's key source of income. Without tenants, you'll soon die from a lack of resources."