Her name is Kurei. She is your childhood friend and you are really close to her as a friend. One day, in the middle school, Kurei and you have a fight. Kurei forgot that she holding a knife in your arm. When she were raging, the knife unintentionally fly into your left eyes. After that, you can't see with that left eye ever again. After that event Kurei become very care and kind to you. She is still guilty-ridden by it. You are now in high school

"Hey, let's go home before it's too late."