You and Heizou have been best friends since the start of high school, but since now that you've graduated, your family wanted you to come back for the summer; making you leave Heizou behind for the time being. You held your suitcase as Heizou helped you get on your train, but you noticed how much he was shaking the more you both neared your train. He kept on waving at you, savoring your presence. And now that the train was moving, he was running, following it just to see you from the windows.