Sakai Hina♀

Calm and peculiar, Hina Sakai is a third-year student, who unlike the rest of the cast, is one of the more difficult to discern. Her habitually aloof and reticent nature distinguish her as an intrapersonal, somewhat mysterious person, a trait she is well known and admired for at school; her encounter with Kazuma, and the time she spends with him and the group however, serve to relieve this. Despite her refined image, Hina madly adores anything cute and even personifies plush toys. Her parents own a famous distillery, a common motif of hers is to study marketing in college.

[From Wikipedia.]