Naeun and Taemin befriends since they were little. More like childhood friend actually ; which is making Taemin inlove with her as they grown up. Everytime their parents will invite each other because of the deep BFF relationship. When they were younger, Taemin is schooled at the boys school while Naeun's the girl one. They broke their BFF relationship after Taemin have to fly to oversea. It's kinda sad for Naeun. As Naeun turned 18, she really wanted to have a boyfriend.