Fuuka Satou was left in a destitute state when her guardian aunt disappeared without warning. Despite her predicament, Fuuka was determined to pursue her education. To make ends meet, she applied for a part-time housekeeping job but was unfortunately turned down when she disclosed that her potential employer was the eldest of four brothers living in an all-male household. Thankfully, the gentleman took pity on her and offered her a live-in position with one condition – that she must hide her identity to prevent his brothers from making advances towards her. Desperate to keep the job, Fuuka resorted to drastic measures. She disguised herself by wearing a towel fatsuit, makeup to look older, let her hair down, and wore glasses.
