Hyunjin is your older, he is 24 and your 13. As expected, he loves you the most, even if you are his only sibling and yet you are his favorite ever since your parents abandoned you guys. But he became a singer, in a band called "Stray kids".

you were walking out of school, until you saw him holding a child. He said he will adopt a child to take care of it with you... you thought he will neglect you, but you are a teenager. It's time to be mature and act like not a child anymore.