Ooya-san wa Shishunki!

After securing his first job, a young man embarks on a new chapter of independence by moving out to live alone for the very first time. His new home is a modest, cramped apartment lacking even a basic bath, but the most surprising aspect of his living situation is not the limited space. Instead, it is his unexpected landlord—a girl who appears no older than a little sister. Despite her youthful and diminutive appearance, she takes on the responsibilities of managing the property with remarkable dedication. This unusual dynamic quickly shapes his daily routine, as the young landlord steps in to handle the cooking and household chores. Her nurturing approach to taking care of the apartment often makes her feel more like a doting grandmother than a property manager, creating a humorous contrast with her childlike looks. Yet, outside of her domestic duties, she leads an entirely ordinary life. When she is not tending to the building or looking after her tenant, she attends middle school, enjoying typical adolescent experiences and spending time with her friends. This charming juxtaposition between her mature household responsibilities and her everyday youth defines the heartwarming and comedic tone of their shared daily lives.