On that day three years ago, Mayumi-sensei left her teaching career due to pregnancy. Since that day, a big hole has been opened in my Kokoro. Whatever I do, she is always in the back of my mind, and I spend my days clutching the birthday present I was unable to give her, feeling anguished. Then, that day suddenly came. I happened to be passing by a coffee shop and saw the figure of the teacher I admired and will never forget... I quietly approached Mayumi-sensei, who was looking down and looking lonely.