"Dain! Come here for a minute," Sunyoul called for his younger sister, Dain, who is watching TV at the living room. Dain stands and walks in a cute way to Sunyoul. She sits next to Sunyoul and asked, "Yes, oppa?"

"Do you always watch oppa perform at music shows?" Dain nods and asked, "Why?"

Dain is eager to know what does her brother is trying to talk about. Sunyoul thinks for a while and asked, "Do you want to see oppa perform tomorrow?"

Dain's eyes light up in pure excitement. She nods and squeals. She said, "Yay! I finally can see oppa perform live!!"

Sunyoul chuckles on how adorable his little sister is. Dain runs around and Sunyoul stands. He walks to the sofa and sits comfortably. Dain lies down and her head rests at Sunyoul's lap. She eventually falls asleep and Sunyoul pokes her cheeks before taking a nap.

The next day, Dain and her mother arrive at Music Bank. Dain gets off from the car and runs inside. She saw a female security guard and walks to her. She asked, "Unni, where is the backstage?"

The female guard looks at Dain and asked, "Are you Sunyoul's sister, Dain?"

Dain nods eagerly and the guard replied, "Go straight and turn left."

Dain bows and said, "Kamsahabnida!" She runs and some fans saw Dain running to the backstage. Another security guard stops Dain and asked, "Who are you?"

"Seon Dain. Sunyoul oppa's little dongsaeng~," Dain replied with aegyo. The guard nods and shows her the way to UP10TION's waiting room. Dain bows and thank the guard before running inside.

"Sunyoul oppa! It's me, Dain dongsaeng ah." Dain walks around to find her brother.

Meanwhile, Kogyeol just got out from the restroom. He walks and adjusts his clothes before their performance is up. He is too focused about his clothes until he accidently bumps into Dain. Dain nearly fall and glad Kogyeol catches her on time. Dain's head hits Kogyeol's chest and Kogyeol asked, "Gwaenchanh-a yo?"

Dain looks at Kogyeol and her world stops. She thought inside her brain, "Oh my gosh. Prince Charming just saved me. Oh my, oh my, oh my! H