Upto what I've read there is no real siblings from his parents but his father friend and uncle will have their own respective kids. So it's like he got two siblings like cousins.
Yuz no actual siblings, but he loves being the older brother to his uncle’s kid and papa’s friend’s kid too. And so many more cute moments for child actors younger than him owowowow
Thanks for letting me know
Thank youuu
Will Seojun continue being an only child or will he have younger siblings in the future?