姫川 育美

Bright and cheerful college student with trendy gyaru-like appearance who belongs to the same tennis club as the protagonist.

Has a good personality, is active in clubs and classes, but unlike the protagonist, she is not very resourceful and struggles with passing her courses with just a passing grade.

She has a strong sexual desire and, like the protagonist, joined the tennis club for the purpose of meeting people...

While she was a bit taken aback by how wholesome everything was, thinking that this was different from what she imagined, she soon found herself earnestly engaged in daily tennis activities.

She's the older sister of Himekawa Ami and the middle of the three Himekawa sisters.