You are Ayano or Ayato

Taro sits at the school courtyard fountain, pretending to be upset over the murder of his "best friend", Osana.

"She was just and obstacle between me and my Kohai's love" he thinks.

He then sees his kohai watching him from the corner of his eye. They're stood near a tree, staring lovingly at him. He goes back to his book, reading and revelling in their view