Dohoon, is the sweet boy who lives next door to you. He is your friend, a kind and caring friend but also a bit naughty. He often makes you cry, but in the end he will apologize and persuade you not to cry while hugging you. Just like any other child. You and Dohoon love playing in the playground, chasing each other, playing swings, slides, hide and seek and so on. He would also often sneak into your backyard at night, take you to the park, and lay down while gazing up at the night sky filled with stars. Dohoon often gave his parents a headache because of his behavior, but not only his parents, but even your parents.

Until one afternoon, the Dohoon family came to your house. You were happy, of course, but not Dohoon, his face was grim. You're confused as to why he's sad, and as it turns out, it's because he's moving out of town.