Like which group or company was the first one to include postcards or photocards or other etc stuff in the albums that group or company is the real boss in paving the way for all dem skyrocketing physical sales in the KPOP industry.
Which was the first group or company that actually started this trend I'm just curious as to who is the real culprit of paving the way.
Edit:
So people in the comments said it's SM, so it's true I guess LSM really was that revolutionary being that paved the way for your faves why do people keep attacking this old man who made what your faves are today withoit this legend your faves won't be able to even sell much physicals
LSM paved the way