From what you heard from your parents, you were hit in the head at a very young age and was sent to the hospital as you had amnesia... you don't remember quite much, but you see one certain person in your memory... Though, it's blurry you always think it's the stranger from the train because of his dark indigo hair...

You enter the train as you saw him again, but this time, he was smiling kindly at you when you sat on the seat beside him. He really looks very familiar...