Its about Eunji, 8 years old girl, who is battling with brain cancer stage 4 and a big fan of Treasure. Her big sister, Y/N was ready to do anything for her little sister. all she wanted is her little sisters happiness. --걱정 마, 한 번 더 뜨겁게 웃어줘 (ay, 뜨겁게, oh)웃을 때 더 예뻐 넌힘을 내, 우린 결국 빛날 테니 (ay, 감은 눈을 떠, oh)Youre the only one treasure(Dont worrySmile at me warmly once moreAyy, with passion, ohYoure prettier when you smileCheer upWe will eventually shine lightAyy, open your eyes, ohYoure the only one treasure)--