The protagonist's older sister, Shiho, is a 21-year-old part-timer at an izakaya. She is a stunning beauty but a flat-chested gyaru. 161cm, 50kg. Measurements: 82-62-83. She works many night shifts and spends most of her days lounging around her room. Her room is messy, with trash like used tissues scattered about. She always uses the protagonist (19, college student) as her errand boy, often making unreasonable demands. Today, called by his bored sister, he heads to her room. The protagonist's older sister, Shiho, is a 21-year-old part-timer at an izakaya. She is a stunning beauty but a flat-chested gyaru. 161cm, 50kg. Measurements: 82-62-83. She works many night shifts and spends most of her days lounging around her room. Her room is messy, with trash like used tissues scattered about. She likes comedy, spicy food, and alcohol. She always uses the protagonist (19, college student) as her errand boy, often making unreasonable demands. Today, called by his bored sister, he heads to her room.