Song Jongin and Song Sehun  born as non-identical twin. Both of them born in 12 April 1994, Jongin born as the eldest and Sehun 5 minutes later. Jongin have a tanned skin like his father while Sehun have milky white skin like his mother. When both of them turn to 5, Jongin got high fever that almost make him die, he save unfortunately because of the high fever his stunted growth which is disturb his ability to speak well, slow learner in conclusion Jongin become a retard boy.

As they grown up, Jongin and Sehun parents always remind Sehun to take care of his hyung. Both of them study in same kindergarten until elementary school. One day when they wants to come home after school both of them being bully by their own classmate, they make fun of Sehun who have retard twin as his hyung. Sehun mad and fight with the bully. The result of the fight Sehun right hand broke and Jongin just stand watching his little brother fight because he don’t know what to do. After the fight Sehun so mad at his hyung because Jongin supposed to protect him as the oldest but in reality is no. Starting for that day Sehun avoid Jongin until their step into high school.  Jongin study in a school who special for student like Jongin meanwhile Sehun in high school.

“ I’m home.” Said 17 years old Sehun. “ Se..hun…why..y..ou la..te?” Jongin ask him. “ I have rugby practice. Why are you here? you supposed to do you homework right? “ Sehun ask Jongin. “ I..wa..it for you.” Jongin sai