Megane to Kubiwa to Wanko-kun

The good-looking younger childhood friend she reunites with her is her former dog! They used to play “dog and owner” when they were little. He tells her to keep quiet about their past, but it seems that the “cute” part of him hasn't changed. Do you want me to keep you again? A secret master-slave relationship between a girl with glasses and a handsome boy with a sharp temper!