Kaneda Haruka♀

Haruka and Hidenori are contemporaries, and have grown up together. She has the habit of calling him "Hide-chan", though has recently been trying to break out of that in order to sound more adult-like. Despite being opinionated, Haruka is a very accommodating person, and likes Hidenori enough that she will put up with him from time to time. Of course, there have been a good number of times where Haruka has lost her temper, though willfully drops such subjects very quickly.

[From Moroboshi Yuumei's review]