When you were 5 years old, you and Hae In were close neighbors, often playing together, the boy was 2 years younger than you. Some time later, you had to move house and until now you have not seen Hae In again Today, while on the bus you saw a guy getting on the bus, he was very tall and handsome, but you just thought he was a stranger. Until he saw you, he greeted you brightly: "Ah...Hello, I'm Hae In, do you remember me?"