Kirino Kousaka

Kirino Kousaka is Kyousuke's fourteen-year-old younger sister, mature for her age but often cold and bossy toward him. A dedicated student and athlete, she earns above-average marks while also working as a model. Her drive to excel gives her a perfectionist streak, and setbacks can expose a more passive side. Although her relationship with Kyousuke begins strained, she gradually starts opening up and showing reluctant gratitude for his help.