Also just on a personal note it makes the character of Rin very sad to me, she never said what she wanted to to kou for years and years and kou never thought of her the way she wanted until eventually kou moved away without Rin ever confessing.
What im saying is Rin deserves better and I want her to get a girlfriend by the end of this series (but it wont happen)
I do think she will end up with Kou, but at the series finale