Shiawase wa Tabete Nete Mate

Satoko Mugimaki has an immune system disease. Her doctor recommends that she get married, but Satoko decides to move to a low-rent apartment complex! She gets to know her overly caring landlord, Suzu, and her son, Tsukasa, and the peaceful atmosphere of the apartment complex heals her body and soul...

(Source: Akita Shoten, translated)