Shintaro P.O.V implied shinaya
There were a lot of things that you hated about her. Her happy go lucky personality, the way she sticks to you wherever you go, the way she still smiles even though she gets a low grade, the way that she thinks about the happiness of others more, the way that... the way that she went into you life, and broke it to pieces..
Even with all those reasons you can't seem to hate her. Her smile, her laugh, her personality, you can't really hate it because..
..because she was the first friend you had, and you..
miss her, and the worst thing is you can't tell her anymore.