Tamaki Shiokawa manages the daily operations of Sparrow's Hotel, overseeing staff activities and ensuring smooth function. Her responsibilities encompass training employees in essential procedures like bed-making, assigning tasks to resolve guest issues including intoxication, and coordinating events such as Golden Week bookings. She actively coordinates with staff like front desk agent Sayuri Satō and bell boy Misono, maintaining hotel operations amidst frequent disruptions and rowdy incidents near the premises.

She possesses blue eyes and short, neck-length blue hair. Tamaki typically wears glasses and a professional uniform featuring a cravat as her signature attire.

Her older brother, identified only as Shiokawa, holds the position of Business Manager at the same hotel. He exhibits a pronounced sister complex, openly expressing an obsessive fixation on her that causes Tamaki profound embarrassment and discomfort during their interactions.

Business-minded and pragmatic, Tamaki serves as a central point of stability among the staff despite her diminutive stature. She employs sharp comebacks and maintains decisive control during chaotic situations, effectively counterbalancing other employees' eccentricities. Her management style involves delegating tasks like handling unruly guests or security concerns while skillfully navigating the complex interpersonal dynamics within the workplace.