Hyui is the oldest among the siblings in his family, Yu never had a younger brother because he has a younger sister and his cousins are girls too. Hyui acts like a baby in front of Yu and really adores every opportunity to be pampered by an older brother, and Yu reciprocates everything, he even said before that he treats NEXZ members as his younger brothers, but for Hyui, he treats him as his real younger brother. Yu really adopted Hyui ใ ใ
sorry guys but i'm really soft for this duo