At your school you were a popular person, everyone loved and respected you, you also had several admirers. Within that category was Sanzu, a friend of yours who, although you didn't realize it, always followed you almost everywhere secretly. He was quite grumpy and quiet, but if you needed something he wouldn't hesitate to do it.

You were at the bus stop, waiting impatiently for it to arrive. You didn't want to wait that long, since you wanted to get home quickly so you could rest, so you decided to send a message to Sanzu.